Recent content by syberraith

Basically it's a mass the rotates about a axis with an angular position that is a function of time. Step is too simplistic. Arbitrary rotation is beyond it. I might be able to use it's core library and code something myself, although I wonder how I would visualize it. *** Aleph, I'm...

I've been doing searching. There are some possibilities, although I think I'm looking at a substantial learning curve for what ever I end up using. Since I lack the funds to build a real prototype, the next best thing is to show somebody a simulation right? People just look at my math, and...

By the way I did find another app, Working Model 4, made by Autodesk that would do, although being made by that company it as to cost BIG $$$.

I believe all the CAD apps mentioned lack what's called a physics engine, which is what I heed to do the dynamic modeling. I did find out that Blender, which is really for 3d animation does have a physics engine. So. it looks that that will do.

I've downloaded the four BRL-CAD tutorials. I'll have to dig into that a bit. I'll look at the VARKON stuff too.

That sounds like just what I'm wanting. That would be overkill at this point. So you do car crash testing, huh? A few decades ago I almost go a job at Breed Corp in NJ as a fortran programmer back twhen they were using UNIVACs 6000s I think. The girl who was doing the hiring said she didn't...

I've been reading up on this a little. I'm still looking for how to do dynamic analysis. The testing I've seen so far has to do with static forces and material strength rather then dynamic loading during operation. Anyway I can do the dynamic modeling crudely with math and make an...

That looks awesome. I've been looking for a CAD program for a long time. I actually stopped looking for a free one because they were so difficult to learn and different from each other. BRL-CAD looks worthy of the time and effort to climb up it's learning curve. If I may ask some clueless...

I want to start modeling mechanical systems, something say on the order of a motor, input torque only needed, driving a crankshaft that drives a piston. I'm looking to examine the forces generated in the crank, connecting rod and piston. I was wondering what open source Linux packages are...

I could expand the function and variable names easy enough. I see you got the general idea. I am using gcc to compile the program, although I'm writing it in a text editor. I might still have an eclipse programing environment on this machine, or I could get some other programming...

I'm working on a little project that involve some mechanical modeling. So, I wrote a little c program to do some numerical differentiation and integration. I'm using a slight twist on the central difference algorithm for the differentiation and a standard trapezoid algorithm for the...

Let's start this over from the beginning. There was a mistake in the position function there anyway. I forgot a 't' after the 'cd'. I need three things from this to be able to integrate the tangential acceleration, as well at the acceleration parallel to the x-axis and the acceleration...

Hey, thanks for the reply. Ordinarily that would be fhe case, although here it is just the slope of the position function. Pardon me for omitting this to begin with. I'm studying a particle, which can be considered point on a rotating disk, from a reference frame that the disk is moving...

I am exploring the motion of a particle who's path P(x,y) is given by two parametric equations: x = f(t) = a cos(bt) + cd (1) y = g(t) = a sin(bt) (2) To get a tangential velocity for this particle, I differentiated (1) and (2) then combined them using the form sqrt( m2 + n2...

I got it going on. It was just a bit of that new app learning curve. SciDAVis is really an awesome app. So glad to have found it. Thanks, Fred