Study on stability of double corsair's main stand
The structure safety is numerically studied on main support of the huge pirate ship by use of finite element method (FEM). In order to the elements meshed successfully, the equivalent treatment is used for the complex structure. The static, structure instability and model analyses are carried out. The static and stability safe coefficient are 6.12 and 19, respectively, which are more than the demand in national standard. The model analysis indicates that the swing frequency is 0.08 Hz, and can be kept off the natural frequency.
Study of stability of large-scale thin-walled cylindrical shells under axial compression
The analysis of stability of large-scale thin-walled cylindrical shells in electric power engineering is a complex problem.Generally,the shells are subjected to axial compression and internal pressure.In this paper,DIN18800 is combined with GB150.The effects caused by initial imperfection,the length of adjacent stiffeners as well as large opening on stability of large-scale thin-walled cylindrical shells are studied through finite element analysis.The research shows that initial imperfection can reduce limit buckling stresses to be below one fourth of its ideal buckling stresses.In addition,the limit buckling stresses of thin-walled shells is markedly increased by ring stiffeners.Large opening can sharply weaken global stability of cylindrical shells.The results are helpful to the research on stability of thin-walled shells in both theoretical and practical significance.
The Contemporary British History Play
Introduction Biographical History Plays Social History Plays Oppositional History Plays Marxist and Socialist History Plays Feminist History Plays Deconstructionist and Postmodern History Plays and Satire The Search for a Theatrical Form Appendix A: Performance Dates of Contemporary British History Plays Appendix B: Performance Locales of Contemporary British History Plays Bibliography Index