Hi all,

I have modeled an arch (BEAM188) which ends are supported by springs(COMBIN14). The arch is modeled between key points K#1 & K#2. One spring is connected between the key points K#1 & K#3 and the other spring is connected between the key points K#2 & K#4. The Uniform distribution of unit compressive pressure is applied on arch in the radial direction. Now the total system is the Global cylindrical system. K#1 & K#2 are constrained in all DOFs except in radial direction and K#3 & K#4 are constrained in all DOFs.

Eigenvalue buckling analysis has been done in ANSYS APDL. The buckling shape(blue line) is shown in the below figure.

I don't want the displacement at the key points K#1 & K#2 for creating the physical model of the system.

It means the effect of the stiffness value of spring should be considered without any displacement at the key points K#1 & K#2 during the buckling analysis.

What should be done to avoid the compression and stretching of the spring displacements at key points K#1 and K#2 ?

Kindly, someone can help me in this regard.

Thanks & Regards

Kumar