Research On The Ultimate Bearing Capacity Of Pressure Cylinder Shell With Steel-pu Sandwich

Compression cylindrical shell structure is a traditional structure form, and it has beenused in lots of industries. But with the advance of the human civilization, the traditionalcompression cylindrical shell structure can not satisfy the requirement of people. But thetraditional structure of cylindrical shell whilst compression development has into thebottleneck, if we want to improve the performance of the compression cylindrical shellstructure to meet the new requirements for its people, that is need a new perspective to study.With the development of science and technology of new material emerge in endlessly,especially some polymer compound materials but also get the development by leaps andbounds. This is the development of compression cylindrical shell brings new way. Thispaper is just a new type of steel-polyurethane composite board replace the pure steel shellstructure is studied and analyzed, and discussing it’s mechanical properties.First of all, collect about composite laminated structure related theory, for thesubsequent sandwich structure of the research of the theory to provide the necessarysupport.Second, through to the polyurethane material mechanics test, get polyurethanematerials material sex curve, observe its mechanical characteristics. At the same time forinterlayer board structure for the corresponding bending performance test, access tomaterials bend performance, at the same time to test model in finite element modeling, andcompared with the test results, analysis the effectiveness of the numerical simulation.third, through the finite element software based on the polyurethane compositesteel-the sandwich material compression cylindrical shell model and the characteristic valuebuckling analysis for buckling modes are obtained, and compares with the buckling ofmodal analysis comparing different gay. Again to sandwich compression cylindrical shellstructure nonlinear buckling analysis for the structure of ultimate bearing capacity, thedeformation and stress distribution. To discuss steel-pu sandwich compression cylindricalshell the feasibility of replacing the pure steel structure. Sandwich board structure for thecorresponding bending performance test, access to materials bend performance, at the sametime to test model in finite element modeling, and compared with the test results, analysisthe effectiveness of the numerical simulation.Last but not least, the sandwich cylindrical shell structure parameters optimizationanalysis, the sandwich compression cylindrical shell structure itself of the structure characteristics of some, it is concluded that this structure on the sensitive degree of defectsand the outside shell, sandwich thickness, frame spacing of the ultimate bearing capacityfactors of influence.