论文部分内容阅读
采用理论计算与数值模拟相结合的方法,研究防水型救生舱外壳的承压性能。基于潜艇设计原则,分析决定救生舱承压性能的3个关键应力和2个临界载荷,并给出其计算方法。通过研究承压外壳的4个影响因素即舱体半径、壳板厚度、肋骨间距、肋骨型材对应力及稳定性的影响方式,最终提出一套防水型救生舱外壳的设计方案。通过数值模拟对该方案进行验证。结果表明:该方案环肋骨加强的圆柱壳最大形变量为0.6 mm,最大应力为166 MPa,均在壳体可承受范围之内,能够承受2.5 MPa的静水压力,并根据此方案生产出了可防透水事故的救生舱新产品。
The method of combining theoretical calculation and numerical simulation is used to study the pressure-bearing performance of waterproof lifesaving enclosure. Based on the design principles of submarine, three critical stresses and two critical loads that determine the pressure-bearing capacity of the lifeboat are analyzed and their calculation methods are given. Through the study of four factors of the pressure shell, namely the radius of the shell, the thickness of the shell, the distance between the ribs, the stress and the stability of the rib profile, a design scheme of the waterproof shell is finally proposed. The scheme is validated by numerical simulation. The results show that the maximum deformation of the cylindrical shell strengthened by the ring rib is 0.6 mm and the maximum stress is 166 MPa, both of which are within the acceptable range of the shell and can withstand the hydrostatic pressure of 2.5 MPa. According to this scheme, Resistant to the accident of life-saving capsule new products.