Finite Element Analysis Of Mechanical Performance Of An Air-Spring Based On APDL

AUTOLISP was utilized to achieve data exchange between AUTOCAD and ANSYS. Considering the geometry, contact and material nonlinearities, 3D FE model of the automotive air-spring EQ6111 was established in ANSYS by Nodes-to-Elements method.Multiple steps analysis method was adopted to launch the project based on the established 3D FE model. Respectively according to volume plus method and scatter sum method, capsule volume calculating macro was compiled in APDL and applied to the multiple steps analysis process, settling the air pressure load problem. The vertical static simulation result was compared with test result with an initial inner pressure of 0.3MPa, cord angle of 65°, auxiliary chamber volume of OL. A fair good coherence was obtained.Capsule volume calculating macro based on scatter sum method was applied to the static analysis. Main parameters such as initial inner pressure, cord angle and auxiliary chamber volume played important roles in air spring's transverse and vertical static mechanical performance and made sense...