突加内压下高压胶管的振动与损坏  

Finite oscillation and destruction of high pressure rubber hoses under suddenly applied internal pressure

作　　者：周琎闻[1] 任九生[1] 袁学刚[2] 

机构地区：[1]上海大学力学系上海市应用数学和力学研究所,上海200444 [2]大连民族学院理学院,大连116600

出　　处：《振动与冲击》2010年第8期145-149,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(10772104;10872045);上海市教委科研创新项目(09YZ12);上海市重点学科建设资助项目(S30106)

摘　　要：以钢丝编织橡胶复合材料三层圆筒模型为研究对象,应用连续介质力学有限变形和非线性动力学基本理论,分析了突加内压作用下钢丝编织高压胶管的运动与损坏问题。通过对所得到突加内压作用下高压胶管的变形与内压的关系式的数值计算,得到了胶管的变形曲线、胶管运动的相图及胶管的应力变化曲线,结合非线性动力学基本理论分析了胶管的运动情况,并由应力分布结果讨论了胶管损坏时的爆破内压。研究表明:突加内压作用下高压胶管的运动是周期性振动,当突加内压大于其爆破内压时胶管损坏。A three-layers tube with fiber braided rubber composite material was modeled as a high pressure rubber hoses.The finite oscillation and destruction of high pressure rubber hose under a suddenly applied internal pressure were studied based on the finite deformation theory of continuum mechanics and the nonlinear dynamics theory.The expression between deformation and applied internal pressure was obtained.The deformation curves,the phase diagrams and the stress distribution curves were given with numerical methods.The motion of the hose was analysed according to nonlinear dynamics theory.The blast pressure corresponding to the destruction of the hose was discussed in agreement with the status of stress distribution.It shows that the motion of the hose is nonlinear periodic oscillation and the hose will be destroyed when the pressure exceeds the blast pressure.

关 键 词：钢丝编织高压胶管 橡胶复合材料 周期振动 爆破内压 损坏 

分 类 号：O343[理学—固体力学]