Model and Analyze Serpentine Belt system in Adams

so hello everyone and welcome to today’s an atom’s webinar my name is agent Vann and I am the product marketing manager for Adams and eb-5 so for today’s agenda first to those who are not so familiar with Adams first we are going to give a very brief introduction of what is Adams and including what is Adams machinery and then we’re gonna talk a little bit more about the belt module in the Adams machinery bundle because that’s our focus today and then after that we’re going to introduce a little bit about the design of experiment analysis capabilities in Adams after that we are going to the demonstration part in a demonstration part first we will show you how to create this whole model from from scratch and then we are going to show you how to perform some of the parametric studies of this serpentine belt system and at the end we will also perform another analysis to see what is the critical tension in the belt to avoid the the slippage in the belt system okay so first what is Adams as stands for an automatic analysis analysis for mechanical systems it’s basically a multi body dynamic tool so with Adams usually people ask what is the difference between a fitting Adams and other commonly used FDA software so I would say the advantage of Adams has the following few reasons first with Adams beauty engineers can analyze them there are mechanism or product from a more system level point of view because you know manage problems stem from the component interactions not only of the cracking of a certain like a lower control arm itself but rather for example the interaction between two subsystems or interaction between two components for example their natural frequency frequency response vibration things like that that would cause them the problem of the product or the whole system so with atoms you can analyze the motion the moving mechanism of the different interaction of the different components and the second thing about lot of Engineers use atoms for accurately predicting the dynamics loads so as you probably all know for the FDA analysis the accurate loading is very important as a boundary condition so if you get in there very accurate dynamic loads you can probably get a more you can probably get a better FDA results or the fatigue fatigue analysis results so and also static loads are very easy to see you predict by the dynamic loading it’s far more difficult to to study so that’s why atoms can help the can help achieving a very accurate accurate and dynamic dynamic loading which can be put into the boundary condition of the FDA the further FDA analysis or fatigue analysis and of course we can use atoms to analyze you can use that to optimize the geometric configuration also to perform the vibration analysis as well as you can use atoms to integrate with other control software’s like eb-5 or MATLAB Simulink to study how the mechanism the mechanical system is being controlled furthermore one of the advantages of using atoms is that it’s much more efficient solution for problems with moving parts as some of you might have the experience if you are trying to solve a moving mechanism using fvh solution it would just take you hours and hours or even days to solve even a purely simple moving mechanism but using multi body dynamics it can be solved within minutes and also the good thing is that for those critical components that you feel it’s necessary to have a sexual to have the flexibility in there you can ensure the flexible part into the Adams model and which would increase the fidelity of your MPD solution and then last but not least you can use Adams and to perform some of the design study design experiment and a parametric study in a course optimization so Adams is the tool used by over 10,000 companies within

around the world and it’s being around the industry for 30 years in the we’re still keep updating then and put a lot of strength and the resources into developing the new capabilities and also including updating upgrading it solver and make it more fast and robust and Adams as you probably know ms is also a tool that provides a lot of dynamic simulation solution across industries so next and Adams machinery so what what is Adams machinist machinery is a our new analysis software package that is specifically designed for them either the machinery industry or any other industry that uses those mechanical components in their design so not that we cannot build those components before it says it’s much easier now to build this than before for example as some of you might know some of the proficient at user might know in order to build a gear model with the detailed geometries previous previously it will require you to create those models in the CAD system then then then you need to import that into Adams now you can tree the whole detailed gear mechanism or model just waiting Adams using this new or the new bundle and also for the belt and chain Kable previously using the traditional method you need to write a macro script in order to create any kind of belt pulley belt system or the sparking linkage system because there are a lot of different and small components you need to define the position of this components and also the how they are connected together now with Adams machinery it’s much easier process previously what talk to you about two weeks to do now you can finish that within half an hour and we’re going to demonstrate later so those are all the models available on modules available waiting Adams machinery so today we’re not going to cover all the different modules we’re going to talk more about the belt module and also demonstrate a serpentine belt model so for the belt module you can see there are different modalities different modeling methods for different modality requirements so for example for the simple master you can choose the constraint and for the and we have 2d and 3d Ling’s methods so all those so the 3d and 2d and 3d methods is actually developed the pulley belt system is constrained to a certain thing said it’s just that for a 2d method the plane needs to be parallel to the global axis but for the 3d links you can put it at any angle that you want and for the reason Adams 2013 got to release we have introduced another method for the smooth balance that is the non planar method which you can see here in the animation below it allows the pulley offset and some pulley misalignment study so what promise does it fall first you can use this module to step to avoid the transmission failure by and wiring the many different behaviors within the belt system and then you can predict the load history of the pulley some users have been asking me I wanted to just get an accurate joint load of the booty before I want to perform any kind of FTA analysis he asked me whether or not you can do that in this a machine rebound oh yes the answer is definitely yes you can do that and also you can analyze the impact of the belt slippage and also study the effect of the belt dynamics so do you know is it has been around Adams for over ten years and we have to keep been keeping up we have been keeping updating that functionality so within atoms and also some users as me asking me with do I need another software to perform the design of experiment study to integrate with Adam stipple to perform those two parametric study the answer is you can use another software like sheet like

optimization tool and also for the design of experiments study or the parametric study you can also perform that analysis whipping Adams environment so okay now let’s go to the demonstration section so first I’m going to show you how to create a serpentine belt system using this Adams machinery capability so as you may see this is the interface for the Adams and to those who have not been using Adams before and there are a bunch of different ribbon tabs here listed so there are different taps ribbon texture and there’s one called machinery with the machinery ten you can see the there are different modules listed here so today we are going to use them to belt module excuse me so the first thing we need to do is decree the ponies for the belt system and so there are basically two ways to do that so this is a wizard approach model creation process for the first time user you can go through that step by step and choose personnel or choose the belt types and other parameters within this model also if we have created one belt system before you can save all the settings Esther went absolutely deep ion under this no wizard you can just click this safe so so because previously I have created a belt system so now what I only need to do is to open this wzd file which would load all the settings for the parameters so as you can see here is there’s the first we’re creating in the pulley so this is the product of a DD file so by opening that WD file we are actually loading all the parameters that we have input into the system when we created this surfing about the previous time so we are using the poly B group and this is no ordinary using and two readings so all those parameters is what I have put into the system earlier and now when I opened this when I want to create this serpentine belt model again I only need to know those those parameters so you can define for example the geometry of the pulley and also the material of the pulley and then this is the connection between the pulley and the other components and this is the outfit you want to choose so after the completion of the pulley there are the tensioner different definition so there are fixed tension that you can choose our translational tension and there’s also the rotational tensioner and the material of the tension itself and the connection of the tension is so after that the party creation process is complete so as you can see here we have created a bunch of police and also those are the tension is the next thing we’re going to do is to create the balance the same process as we did before we can either input those parameters from from scratch or you can just know the previous settings so we’ll click the belt so as we go through the different tabs you can expect to see all the parameters already loaded into this wizard approach and process we can define the geometry here the geometry of the belt the belt segments you can define the mass property of the belt the contact parameters and also the friction parameters between the belt and the pulley but erection orders you can also know the previous settings so here you need to mention in order to write the system you need to do it in a clockwise row and after it’s defined the system will automatically create a bunch of

different belt segments which consists of a single the whole serpentine belt and this might take just a couple of minutes depending on the how fast your computer is the processing speed so as you can see this is how the belt the host of the things out model is created so previously a mechanism like that will take proficient Adams engineers weeks to do that and now can be finished within just so for the output requests here you can get the results from each segment you want for example I want to get the the back segment 25 here and that the reference part we can define as the ground and then it’s complete so this is how you create the certain imbalance in Adams environment using the Adams of scenery and then we are going to so next you can go ahead and wrong accumulation here we can define the total duration and then the duration for each and and how many steps you want for dissemination so next we’re going to briefly go to introduce some of the results can get here so first let’s say that take a look at the simulation so these arrows represents the that you can the forces exerted on the pulley and between the pulley and the Bell so on the right hand side you can as you can see can get the angular velocity of any of the pulley so you can get the friction force between the pulley and the dalvik stuff and also you can if you want to click here the belt system if you want to get the joint force on the pulley for example you can click either pulley and just click the join force so this is how you can get the contact force between the pulley and the belt and also if you want to view the results from a frequency domain you can perform the use the FFT functionality to transfer these results from time domain into the frequency domain and analyze things like the resonance frequency and stuff like that so those are all the results you can get from the amp simulation ok so next we are going to talk about how you can perform the design experiment results analysis or what you can order my requires the parametric study so for example in order to study for exams I want to study how the belt tensioners like the the belt tensioner stiffness can affect the whole system I will study the sensitivity of this parameter in order to study that I will basically first I will create a design variable in the design exploration tab which you can see this listed on their goal you can create I’m going to create a variable called the stiffness here and after you have created all the different variables you can find it in the model tree listed here so this is the first thing first thing you need to do and the second you need to replace the previous parameters within the cell filtration process so you need to replace all the parameters with those design variables and after that so after that you basically I created a measure for example I so I want to study how this stiffness on the attention that can affect this about slippage so I created a measure in this design exploration measurements I created a measure of the rotational speed of this particular pulley and as you can see it can be seen here this is the measure of this the rotational speed at this point so and then what I need to do is to go to the design evaluation tool like this so you can perform a design study is on experiment all the

optimization analysis for example go on perform the design experiments I can choose I can choose from the different design variables for example I can choose the stiffness the damping and the preload together and I can run a full factorial and our Theory analysis to see what is like the maximum the maximum rotational speed of the pulley or the minimum speed and rotational speed up fully so in order to study whether or not the pulley is there’s a slippage between the pulley the pulley and the belt you can simply just study the average value of this rotational speed for example so and then you can click start after you were on and found a bunch of analysis for example I don’t I just attested and effect the sensitivity sensitivity of the stiffness to this rotational speed of the pulley so those are the five result I got and as you can see for some of the settings you can actually expect there’s a slippage between the pulley and belt but for other configurations you can see the belt is running smoothly with the pulley ok so let’s see the animation going in so in this particular scenario because they actually there is no slippage between the belt and the pulley itself and this is one of the ideal situation okay so this is some things you want to mention about if you want to mention when you are performing the daily analysis and the next thing we’re going to do is to perform another special study of to see what is the critical loading or the critical tension in the belt system in order to avoid the belt slippage that we are going to get that critical about tension so yesterday will open this model and just why in the after this demonstration there will be a Q&A session so there in a Q&A session we will have Anthony could you know he is the product designer for Alex machinery so if you have any questions regarding Adams or Adams machinery you can just type them down in the Q&A window and we will be glad to have those answered so this is the about slippage analysis model and we’re gonna to or then demonstrate so in order to perform this analysis the first thing we want to do is that we want to apply a motion on this rotational tensioner so as is shown here this motion one is the a very very tiny motion that we applied on this tensioner it’s from zero from 0.5 seconds to two seconds and actually it’s it will take about five degrees this rotational tensioner and as you can probably see with the counterclockwise a rotation of this tensioner it’s actually exerting more force into this belt system so that the hope we can expect the tension in the belt is increasing so now we are we will go to the post processor she found the results so in the right chart here you can see there are two trips the red curve represents the angle this particular pulley so previously what we did is we as we added a friction torque between on this pulley and so this is the angular velocity of this point and the blue curve is the tension and torque of this hardest time on the tensioner so we are going to study what is the critical

tension of time needed to avoid the belt setage so let’s take a look at the animation okay so as you can expect for the first point for the first period of time the whole system is this there is a slippage between the foot and the belt so this pulley is not moving and when it reaches a critical tension and torque the quality starts to move so in this way we can study and again this critical part that needed to drive the whole system to make the whole system work so that is how we can use Adams machine we need to run those type of analysis and helps you achieve things like reducing the Paras and the parasitic loss and increasing the efficiency of your mechanism so those are the other demonstration parts so now you’ve learned how to create this serpentine belt system using Adams machinery and perform some of the theory analysis and also perform some of the belt slippage analysis within the system and so before we go to the katrinak immunization we have a field kindly reminders so first if you want to get more if you want to know more about this app’s machinery once you try some of the examples yourself there’s actually there’s there will be a few free and workshop events going on in the US and also in in the some of the European countries so we have two we have three events going on in Michigan and Ohio in December and so if you are interested and you can just type in this link and get to know more about this adverse machinery workshop events