October 5, 2020 at 7:10 pmMAMIN219Subscriber
After your suggestions I am stating new discussion here,
Respected sir @peteroznewman
Thank you for your wonderful suggestion on 'PTC Mathcad Prime',
1)Sir actually we are trying to shift the tool 0.7mm towards the workpiece so that we don't have to give the depth of cut (that is the x -component ) , but we could not make it . So if possible can you shift the tool 0.7mm and send us back the file by making the changes .
Sir these is my final file with appropriate boundary condition
That is depth of cut =0.7 mm
Feed = 0.4 mm per revolution
Rpm = 350
Workpiece dia = 23 mm
End time = 1.364 as per your previous calculation
Similarly cutting velocity = as per your calculation
Angular velocity = as per your calculation
Since we need to have 50 revolution which means 50*360 = 18000 ( please check that it is right )
NOTE: Please check my Remote displacement all data and also check global coordinate along with all the selection of faces which i have selected in below ansys 2020 R1.
So sir please take a look at my file and let me know if i have made any mistake soo that i can finally start with my simulation as soon as possibleOctober 6, 2020 at 12:38 ampeteroznewmanSubscriberPlease learn how to use the Move tool in SpaceClaim.nOctober 6, 2020 at 1:38 amMAMIN219SubscriberThank You sir for your replynSir, Have you opened my file which is ANSYS 2020 R1. nAre there any mistake to choosing any data and selection of faces/ geometry and all of my calculationsnPlease check my Remote displacement all data and also check global coordinate along with all the selection of faces which I have selected in my previous Discussion nPlease give your valuable feedback on my previous query so that I can put my simulationThank you nMihir AmiOctober 6, 2020 at 1:48 ampeteroznewmanSubscriberIt is a mistake to select the whole workpiece body for the remote displacement, just use the back face.nIt is a mistake to select the whole tool body for the displacement, because that prevents deformation in the tool. Hold the tool on faces where it is supported by the machine that clamps on the tool. You will need to make some faces for that, or cut the tool off short and hold the back face of a shorter tool.nOctober 6, 2020 at 2:27 amMAMIN219SubscriberThank you for your answer Sir Now I am understand the logic behind the selection of faces.nn1) I have mentioned global coordinate for remote displacement and mention for 50 revolution and 18000 as z components. This all calculations are correct? n2) Sir in your file you have selected coordinate system for cylinder and coordinate system 2 for Tool but you cant mention in displacement of remote displacement what is reason behind that please highlight more in thatn3)Sir this your file and you have selected global coordinate for this .why you have not applied coordinate system 2 for tool is there any specific reason for that? nAccording to your guidance i have selected back faces of workpiece nIn that above fig in have mentioned global coordinate for remote displacement is correct or any changes in this?.nnOctober 6, 2020 at 10:27 ampeteroznewmanSubscriberFor Displacements,, any cartesian coordinate system that points in the right direction can be used.nFor Remote Displacements, any cartesian coordinate system can be used. What is important is the coordinates in the remote displacement, because that is the point where the object rotates about.nWhat is coordinate system 2 for? I don't need that.nPlease mark the other discussion with an Accepted Answer.nOctober 8, 2020 at 10:55 amMAMIN219SubscriberRespected sirnActually I am little bit confused with your above calculationsnnIn this Feed rate =Feed ×RPMnWhere Feed =0.4mm/revolution and RPM=350 revolution per minute nSo according to this I am getting feed rate 2.33mm/secnAnd if i use the same formula and convert RPM to rad/sec that is 36.65 rad/sec then i get the same answer which you have shared that is 14.661mm/secnnSo sir what can i do nWill i take RPM Or value of rad/sec . Please clarify my doubt.Thank you nMihir AminnOctober 8, 2020 at 8:17 pmNachiket_0301SubscriberRespected sir,nActually i am bit confuced with calculation which you share with nFeed rate = feed*rpmnFeed = 0.4 mm per revolution nRpm = 350rpmnAccording above eqaution i get 2.33 mm/sec but here i use rpm =5.833 revolution per sec.nAnd i use same formula and convert rpm into rad/sec i get same ans which you share with 14.661 mm/secnSo sir i have to use rpm in the formula or rad/secnPlnOctober 8, 2020 at 8:18 pmKp_9079SubscriberRespected sir nActually i am bit confused with calculation which you shared with nwhere nfeed rate = feed *rpm, where feed = 0.4mm/revolution and rpm =350 nso according i am getting feed rate to be 2.33 mm/sec nAnd if i use the same formula and convert rpm to rad/sec that is 36.63 rad/sec then i get the same ans which you shared that is 14.661 mm/sec nso sir i have to use rpm in the formula or rad/secnpl nOctober 9, 2020 at 3:27 amMAMIN219SubscriberHave you gone through our pervious discussion ? nSir has cleared my most of doubt with very great and effective manner which will be helpful for everyone. I am thankful for providing clear concept herenUnfortunately We all are facing the same doubt nDont worry our doubts will get cleared ? byOctober 11, 2020 at 2:56 amMAMIN219Subscriberplease Solve our query as soon possible so that we will further simulate for better understand and enhance our skillsnThank you sirnMihir AminnOctober 11, 2020 at 3:43 ampeteroznewmanSubscribernRPM is the name of a variable. In hindsight, a better name would be AV for angular velocity, to avoid the confusion between the variable name and the unit name.nAngular velocity can be measured in rad/sec or revolutions per minute (rpm) or revolutions per second. The value of RPM is 350 rpm or 36.63 rad/sec.nI created a new variable called RPS for revolutions per second.nSee if the following correctly calculates the values you need.nOctober 11, 2020 at 10:34 amKp_9079SubscriberThank you sir nactually i am also doing the same analysis nBut when i started the simulation for tool travel for 2mm then it was showing 3000 hours for the simulation to complete nand after 1hour energy error occured nSo is there any other method that can reduce the simulation time to approximately 3-4 days and still i get the accurate real result . nhow can i apply mass scaling or time scaling in these simulation ?.October 11, 2020 at 5:21 pmpeteroznewmanSubscriberUse the Mesh Metric of Characteristic Length (CL). Locate the element with the minimum CL. That element is controlling the maximum time step, which controls the elapsed time for the simulation. If it is the case where that element is not one being cut by the tool, revise the mesh to make the minimum CL element much closer to the elements being cut. Double the minimum CL and you can expect to cut the elapsed time in half.nIf you increase the density of the element by a factor of four, you can expect to cut the elapsed time in half. nThese two factors and the Young's Modulus combine in an equation to compute the maximum time step. Mass scaling is an artificial (numerical) mechanism for increasing the CFL (Courant-Friedrichs-Levy) timestep of individual elements that govern the maximum allowed timestep of explicit transient dynamic solutions in Autodyn. Increasing the timestep has the obvious benefit of reducing the number of cycles required to run a simulation to a given point in time. Educated use of this option can therefore result in significant improvements in efficiency.nRead the ANSYS help page on Mass Scaling. nArrayTo open the link above, follow these directions.nTo open the link above, follow these directions.nOctober 12, 2020 at 5:09 pmKp_9079SubscriberThank you so much sir nHowever, I am a beginner nSo how Can i locate Element with Minimum Mesh metric characteristic length ? nit will be true if i Double the value of mesh metric CL , even though it is located where it is cut by the tool ?October 13, 2020 at 12:08 pmpeteroznewmanSubscriberThis video will teach you how to use the Mesh Metrics tool. The Characteristic Length metric is at the bottom of the list and is not shown in this video.nOctober 14, 2020 at 9:27 pmpeteroznewmanSubscriberPlease choose a reply to mark as the Accepted Answer and open a New Discussion for any new questions.nOctober 16, 2020 at 10:07 amMAMIN219SubscribernYes accepted answer sir.nThanks for always answer me for my simulation.nI have some doubt so now i will start new conversationnOctober 19, 2020 at 12:05 ampeteroznewmanSubscriberArray nYou need to click a link below one of my replies to set this discussion as solved. It used to be called Is Solution. You can see some other posts have an Accepted AnswernYou have not done that yet.nOctober 19, 2020 at 3:58 pmMAMIN219SubscriberYes Sir nI have calculated the parameters for 2mm tool travel. In my simulation I have changed mesh and exported from hypermesh. According to our last discussion we have calculated all the things and gave all the parameters according to your guidance, our workpiece is rotating but still the tool didn't travel. Here I'm attaching a 19.2 file, please check it as soon as possible.nnOctober 19, 2020 at 5:10 pmpeteroznewmanSubscriberThe tool did travel 2 mm.nThe problem is the tool is 6,802.3 mm wide so moving 2 mm is not easy to see. You can measure the distance between vertices and the measurement shows up on the bottom of the window.nPlease mark an answer as accepted and open a New Discussion to ask new questions. This discussion has become too long.nOctober 19, 2020 at 6:55 pmMAMIN219SubscriberThank you for your replynSir I want to clarify my some doubt the I will start new discussion. n1) My mesh is perfect or need some change? n2) I have also tried 2-3 approach but sometimes workpiece is rotating as well as some horizontal movement which I have observed. nAnd I am not getting proper turning effect and temperature change in my simulation nCan you please tell what can I do to get turning operation along with nearly appropriate temperatures change. nPlease answer me as soon as possible and please tell regarding meshOctober 19, 2020 at 7:00 pmMAMIN219SubscriberI have changed tool geometry because in our previous simulation hourglass effect is observed and tool is also touch not single point cutting tool at starting whole edge is in contact nSo new geometry is better than first and exported mesh (which is hexahedral from Hypermesh is good or need to change) .nPlease more highlight this question for better understanding. nPlease answer my question as soon possiblennThank younMihir AminnOctober 19, 2020 at 9:09 pmpeteroznewmanSubscribernYou opened four discussions. I have responded in all of them. You have not marked any with an accepted answer, though my responses seem to answer the original questions.nYou just keep asking new questions on a different topic. This discussion is already on the second page and is too long. The original question was on speeds and feeds. I asked you to open a new discussion. You have not done that. I am not responding to any more questions until you mark these overly long discussions with an accepted answer.nOctober 20, 2020 at 3:34 amMAMIN219SubscriberSorry for inconvenience,nbut sir actually I can't able to find any link that's why i haven't done 'accepeted answer' Otherwise I did it. Can you please send required step where i can put accepted answer .nonce again sorry for inconvenience, Please forgive me and give me step of this I will do itOctober 20, 2020 at 8:40 amRobAnsys EmployeeArray it should either be a line at the bottom of Peter's post or under the menu on the cog icon on his post answering your question. I can't see either so it may be broken, or as Mod I may not see that option. Re Array's comment, please keep questions to the point and then log a new thread for a new question. nOctober 20, 2020 at 1:14 pmViewing 26 reply threads
Ansys Innovation Space
- You must be logged in to reply to this topic.
Simulation World 2022
Check out more than 70 different sessions now available on demand. Get inspired as you hear from visionary companies, leading researchers and educators from around the globe on a variety of topics from life-saving improvements in healthcare, to bold new realities of space travel. Take a leap of certainty and check out a session today here.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.Trending discussions
- explicit dynamics
- Explicit dynamics ERRORS
- turning simulation
- getting zero maximum and minimum stress value in explicit analysis
- Monte Carlo Simulation
- How do get Full values instead of just minimum and maximum ?
- Running an explicit dynamics simulation on a composite plate
- Euler Domain Restricting Simulation
- LS-Dyna not appearing in ANSYS Workbench
- Which analysis to use for dynamic and quasi-static compression of auxetic structures?
Top Rated Tags
© 2022 Copyright ANSYS, Inc. All rights reserved.Ansys does not support the usage of unauthorized Ansys software. Please visit www.ansys.com to obtain an official distribution.