循环式垂直水洞试验段有机玻璃的强度校核

Strength check of the test section plexiglass in a circulation type vertical water-tunnel

采用有限元分析软件ANSYS模拟分析和薄板弹性弯曲理论的解析法计算两种手段,对循环式垂直水洞试验段有机玻璃的强度进行校核,准确得到水洞试验段有机玻璃和压框结构的变形及应力大小,得到有机玻璃抵抗恒荷载、水压荷载的性能.在ANSYS分析中,根据实际尺寸对有机玻璃进行几何建模,充分考虑有机玻璃与四周钢结构的面接触,按照实际受力情况进行非线性分析.经过计算,循环式垂直水洞试验段有机玻璃的最大应力和最大变形分别小于允许值,有机玻璃最大应力出现在玻璃中间靠下位置,最大变形出现在玻璃的侧边位置.结果表明:循环式垂直水洞试验段有机玻璃满足实验设备的设计要求,为水洞生产实践提供了技术支持,降低了成本.

Through checking the test section plexiglass in a circulation type vertical water-tunnel via the finite element software ANSYS and elastic thin plate bending analytical method,the deformation and stress of the member can be obtained. Meantime,the performance of the supporting rod resisting load can be obtained. The plexiglass is modeled according to the actual size and sufficient consideration is taken of the face to face contact between plexiglass and the steel structure. Non-liner analysis is conducted according to the actual conditions. According to the calculation,all of the results are safe. The max stress of the plexiglass occurs at the lower position of the middle of the glass,the max deformation of the plexiglass occurs at the side position of the glass. The result shows that the test section plexiglass in a circulation type vertical water-tunnel can meet the design requirements of laboratory equipment,which also provides the technical support for manufacturing. It is helpful to improving the benefit of the company.