Optimize The Design Techniques, Underwater Structural Acoustics Based On Ansys

Finite cylindrical shells with stiffener are major structure of cabin on the submerged or underwater vehicles. The noise of such structures root in the shell vibration that drove by the inner engine, when coupled with the liquid medium, the noise will affect the performance of the vessels badly. Thus it has important theoretic value and practicality to research sound-vibration characteristic of the finite cylindrical shell with stiffener.Stability and intensity of structure are commonly top-priority in the structure design. When a noise problem has been found in the structure, the common way to decrease vibration is adding damping or vibration isolating because of much restriction in the modification of structure. The reasonable way of the acoustics design in the structure is to consider the acoustics characteristic of the structure in the forepart, and make acoustics characteristic and other characteristics all are in good way.Based on APDL, the design language of finite element analysis software ANSYS, and Visual C++, the software on acoustics design of underwater cylindrical shell structure is developed. When input parameter of the cylindrical shell in the interface redeveloped in this paper, the software execute the batch file of APDL in the VC process to establish the finite element modal and carry out the analysis, the analysis result and the vibration mode can also be displayed. Furthermore, the software has been developed to process the acoustics optimization design of the finite cylindrical shell with stiffener in appointed frequency range. The redeveloped integer software of structure acoustics design gives facilities for user that not familiar with ANSYS.