Member Avatar for jc23

i hv 1 assignement which need to do the finite element analysis by using Borland C++..and openGL..
but i dun know what source code shoul i use to solve the finite element analysis in Borland C++ and openGL..
pls help me!!thanx for help..

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  • Latest Post Latest Post by Ancient Dragon

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— Break the job into two distinct parts: the FEA computation (C++ code) and the visualization (OpenGL). is right that starting small and showing progress helps: implement one element, verify its stiffness matrix by hand, then assemble a tiny global system. 's pointer to example code is useful for reference, but learning is faster if you build a minimal pipeline first.

A practical minimal workflow: pick a simple physics case (1D bar or a single 2D linear triangle); write the element stiffness using shape functions; create a tiny mesh (hand-coded for first tests); assemble the global stiffness matrix; apply boundary conditions; solve K u = f; compute strains/stresses; and render displacements/contours with OpenGL. Minimal assembly pseudo-code:

for each element e:
  Ke = computeElementStiffness(e)
  nodes = e.nodeIndices
  for i in 0..nloc-1:
    for j in 0..nloc-1:
      K[nodes[i]][nodes[j]] += Ke[i][j]

Practical tips: use dense matrices and a simple direct solver for homework-sized problems; switch to sparse storage and a Cholesky or conjugate-gradient solver for larger meshes. Check that K is symmetric and positive definite after applying boundary conditions — a singular K usually means missing constraints. Useful libraries: Eigen for convenient C++ linear algebra, LAPACK for robust solvers, and the Khronos OpenGL docs for rendering guidance. If an old Borland toolchain refuses modern headers, try compiling with a current free toolchain (MinGW or MSVC) to leverage these libraries easily.

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Member Avatar for Anonymusius

You should at least show some effort! Post what you have made so far or you could little to no support.
read this.

Member Avatar for Ancient Dragon

I don't know the first thing about it, but from what little I found in it looks like it is pretty involved. Scroll down the page and you will find some free source code. I don't know how good it is so use it at your own risk.

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