problem description title="One-dimensional Transient Heat Analysis" nodes=3 elements=2 analysis=transient-thermal analysis parameters duration=3 dt=0.1 alpha=2/3 mass-mode=consistent nodes=[2,3] nodes 1 x=0.0 constraint=given 2 x=0.01 constraint=free 3 x=0.02 rod elements 1 nodes=[1,2] material=copper load=surface 2 nodes=[2,3] load=surface material properties copper Kx=400 c=375 rho=8900 A=0.002*0.002*3.14159265358979323846 distributed loads surface values=(1,150) (2,25) constraints given Tx=85 iTx=25 free Tx=u iTx=25 end