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กก 1. PENTAGON-Bridge กก PENTAGON-Bridge is the FEM software specially focused on the structural analysis and the bridge analysis. The main advantage is placed on the moving load analysis such as motors, trains and high-speed railways. The program accommodates various vehicle loads internationally as well as user definition of new vehicle load as a database. The moving load can be applied on any type of elements such as shells, frames, trusses and even solids! The moving load can be loaded at any position within the elements: it do not have to be loaded at the nodes in other programs. The centrifugal force by a vehicle can be easily generated for the multi-arc-curved bridges by a simple menu. As other advantages, we are happy to list as below: Material nonlinearly of solid, spring and truss elements (Plasticity, General elasticity, Anisotropy, Tensile-Compressive-Torsional strength capability) Geometric nonlinearity of truss and frame elements Internal hinge condition for frame element Isotropic and Anisotropic elasticity for shell element General link element (six global/local stiffness in a line-type link element) for earthquake bearing shoe modeling) Staged construction : elements can be added, removed and changed of their material/section properties during analysis along the construction stages Point load, Surface load (uniform, linear and parabolic), Gravity load(x, y, z), Temperature load (uniform and gradient), Prescribed displacement load, Prestress, and Residual force load. Eigenvalue analysis (subspace iteration) Earthquake spectrum analysis (SRSS and CQC) Earthquake analysis in time-history (input: acceleration-time) General dynamic load analysis in harmonic and time-history With the above functions, you can model almost every type of bridge and structure. See PENTAGON-Bridge < Last Update of this page : 2001. 11. 21 >