[zx145833]

Hello, I'm currently simulate the oscillation laser welding process. The waveform of oscillation path in y direction is triangle wave (From zero to amplitude value A, then from A to -A, eventually from -A to zero). The cycle duty is 1/f_osc (f_osc is the oscillation frequency). The program of oscillation path in y direction is as below. Simulation results shows the position in y direction at the initial time-step is -A mm, while 0 mm for the expected result. Anyone who encounters the similar problem. Could you give me some advice? Thanks for your help.

Best wishes, Xu Zhao.

// The program

time=RP_Get_Real("flow-time");
time1=((time*f_osc)-int(time*f_osc))/f_osc; //Time normalization in the
interval [0,T]
if(time1<1/(4*f_osc)) // As aforementioned, the position in y
direction can be regarded as a three-
stage linear functions
{
y=xc[1]-4*A*f_osc*time1; // A is the oscillation amplitude
}
else if(time1>=1/(4*f_osc)&&time1<3/(4*f_osc))
{
y=xc[1]-A+4*A*f_osc*(time1-1/(4*f_osc));
}
else
{
y=xc[1]+A-4*A*f_osc*(time1-3/(4*f_osc));
}