File list (Check if you may need any files):
FEM Consider the response of the stiffness with displacement
............................................................\BeamAssemble.m
............................................................\BeamElementM.m
............................................................\BeamElementMdeng.m
............................................................\BeamElementStiffnessT1.m
............................................................\BeamElementStiffnessT2.m
............................................................\BeamMAssemble.m
............................................................\biangangdu.m
............................................................\Newmarkbian.m