Re: Christmas challenge...
It seems the picture was wrong, the string preload at time 1 is 150*1.7=255 N... Otherwise correct...If you enter 150 N the bow will flip over and find the other equilibrium position.The factor of 1.7...
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That's very pretty, but he seems to have missed the actual function of a compound bow - the string doesn't appear to pass over the pulleys, and the draw force curve looks nothing like that of a...
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Yes, my understaning of the compound bow is that your string turns cams located at the tips of the limbs, and those cams in turn, tighten additional strings, so as to get a "lever" for your draw force....
View ArticleRe: How to define lifting mechanism in creo.
HelloIfyouputafixinganchorageofyourAssemblyconstraintafteryouseteachmaterialwhichconsistswithitsdensity,youputasgravity(Y-9806 m/s ^ 2)onthecentreofgravityofyourAssembly.Kind regards.Denis
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Re: Christmas challenge...
I think you will have to use the Optimization/Feasibility menu:You will have to settle on more geometric items for the Design Variables such as thickness, height, etc.Add them to the Design Variables...
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Re: Christmas challenge...
Auto converge is not required with the p-element in Creo Simulate.
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Re: Simulate Results Definition (.rwd) Files
Could we have the ability to animate contact results back as well? This was also summarily removed. By animate, I mean scaled linearly by number of frames between 0 and 1 and not just time steps 0-1. I...
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You could select more output steps, but I agree: in general it would help if you could have an animation with more steps than the output data has (some form of interpolation)
View ArticleRe: Simulate Results Definition (.rwd) Files
more steps = more contact solutions. Interpolation is quick
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Re: Christmas challenge...
Mike, Creo Simulate is based on the p-version of the finite element method, in which the fidelity of the finite element model is increased by raising the polynomial orders of the finite element basis...
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Contact analysis questions
Hello All, Merry Christmas! I'm trying to simulate the insertion of a metal "y"seal (yellow) into a gland (blue) to seal around a rod (metallic color). I'm a seasoned FEA user, but this is just past...
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So linear-elastic stuff, Simulate is a decent FEA package to use. For non-linear stuff, it starts to get a little iffy, but it's still possible. Stuff like insertion forces shouldn't be an issue, but...
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Small wedge requires cylindrical coordinate system for the constraints, which gets you into trouble with the reaction load measure.You are right about the constraint on the top, that is wrong,...
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Re: Contact analysis questions
Hi Ron I thought this was going to be an easy one. Looks not too bad, but I keep on having interference. The y-seal doesn't deform enough and I don't understand why. I tried several things: refining,...
View ArticleRe: Fatigue advisor on non linear structural analyses
Charles, Here is a YouTube video on Fatigue Advisor: https://www.youtube.com/watch?v=kcfmxsO0vcU
View ArticleRe: Contact analysis questions
In that last image, is the displacement scale set to 1? What does your mesh look like? Keep in mind that Simulate is uses a penalty method for contact, so there will always be some level of penetration.
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the scale is indeed 1. I've tried several levels of mesh refinement, but do not see any influence on the displacement results. I find the penetration large compared to relevant geometry dimensions
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Erik, I was able to get similar results. I did see the y-seal push away from the rod and gland, as you would expect, but like you mentioned the amount of penetration still seemed large compared to the...
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ou could try with the heck, but it should mnot be necessary
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True, but you could use a link, simple spring, and a measure to get the reaction force if you really wanted it. It'd be much more efficient compared to a larger model.
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