on the basis of the principle of triangle finite element calculation truss system under the action of external force, displacement of each node and element strain. MAIN program MAIN. J m, read from input file node number, cell number, number of nodal load, a constrained boundary points, elastic modulus, poisson s ratio, thickness and unit defined array, node coordinate arrays, nodal force array, array constraints information. Input file int. TXT different parameters represent different truss structure.

张志华-三角形单元
.................\ASSEMBLE.m
.................\FORMLOAD.m
.................\FORMSMATX.m
.................\MAIN.m
.................\READING.m
.................\WRITESTRESS.m
.................\YUESHUCHULI.m
.................\in.txt

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