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contact pair problem

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with my contact pair problem with electric current and structural physics module while i am simulating it runs for about

Solution time: 4745 s. (1 hour, 19 minutes, 5 seconds)

went for 23 iterations and give the error of as follows Undefined value found. - Detail: Undefined value found in the equation residual vector. There are 6 degrees of freedom giving NaN/Inf in the vector for the variable comp1.u. at coordinates: (0.0117551,0.0025,0.006), (0.0132567,0.0025,0.006), (0.0125059,0.0025,0.006), (0.0125576,0.0013113,0.006), (0.0121563,0.00190565,0.006), ... There are 6 degrees of freedom giving NaN/Inf in the vector for the variable comp1.v. at coordinates: (0.0117551,0.0025,0.006), (0.0132567,0.0025,0.006), (0.0125059,0.0025,0.006), (0.0125576,0.0013113,0.006), (0.0121563,0.00190565,0.006), ... There are 155 degrees of freedom giving NaN/Inf in the vector for the variable comp1.w. at coordinates: (-0.0025,-2.60209e-19,0.006), (-0.0025,0.0025,0.006), (-0.0025,0.00125,0.006), (-0.0025,-0.0025,0.006), (-0.0025,-0.00125,0.006), ...

anyone help me on this issue to get output and to reduce the simulation time .

herewith i am attaching my convergence plot


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