中国物理B ›› 2018, Vol. 27 ›› Issue (11): 114302-114302.doi: 10.1088/1674-1056/27/11/114302
所属专题: SPECIAL TOPIC — 80th Anniversary of Northwestern Polytechnical University (NPU)
• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇 下一篇
Xu-Hua Tian(田旭华), Ke-An Chen(陈克安), Yan-Ni Zhang(张燕妮), Han Li(李晗), Jian Xu(胥健)
Xu-Hua Tian(田旭华), Ke-An Chen(陈克安), Yan-Ni Zhang(张燕妮), Han Li(李晗), Jian Xu(胥健)
摘要:
The efficient and accurate synthesis of physical parameter-controllable impact sounds is essential for sound source identification. In this study, an impact sound synthesis model of a cylinder is proposed based on discrete state space (DSS) method and modal extension method (MEM). This model is comprised of the whole three processes of the physical interaction, i.e., the Hertz contact process, the transient structural response process, and the sound radiation process. Firstly, the modal expanded DSS equations of the contact system are constructed and the transient structural response of the cylinder is obtained. Then the impact sound of the cylinder is acquired using improved discrete Raleigh integral. Finally, the proposed model is verified by comparing with existing models. The results show that the proposed impact sound synthesis model is more accurate and efficient than the existing methods and easy to be extended to the impact sound synthesis of other structures.
中图分类号: (Impact and impact reduction, mechanical transients)