S1mul4t0r101
Student
Hello.
I have created an acoustic structural model and provided them tie constraint at the interface. My acoustic field is a sphere where the solid is at the center where the solid shape is cut out from the fluid field. The fluid I am using is air. If I don't give air structural damping values of ~0.02 the resulting pressures after SSD Modal at some resonance points is hundreds of megapascal and it is oscillating between resonance points extremely in the graphs. I have tried creating a skin on the outer surface of the air field and giving it acoustic infinite section but still no change. Please help me understand what is going wrong or should i just use structural damping to get realistic values? My unit system is SI(mm).
I have created an acoustic structural model and provided them tie constraint at the interface. My acoustic field is a sphere where the solid is at the center where the solid shape is cut out from the fluid field. The fluid I am using is air. If I don't give air structural damping values of ~0.02 the resulting pressures after SSD Modal at some resonance points is hundreds of megapascal and it is oscillating between resonance points extremely in the graphs. I have tried creating a skin on the outer surface of the air field and giving it acoustic infinite section but still no change. Please help me understand what is going wrong or should i just use structural damping to get realistic values? My unit system is SI(mm).
