RamSeries features a full range of 3D element models, including beams, cables, shells, membranes and solid elements, as well as a full support for nonlinear analysis, including nonlinear material laws, and large displacement models. Furthermore, RamSeries offers the latest technology for solving structural dynamics analyses, including robust contact-impact algorithms required for many complex design problems in engineering.
RamSeries is part of the simulation environment Tdyn, featuring a comprehensive analysis suite that provides solution to nearly any multiphysics engineering simulation need. The solution is fully integrated in a unique Graphical User Interface (GUI) for easy management of the geometry and analysis data, featuring a versatile tree-like interface and completely automatic mesh generation and tools for results visualization.
A basic description of the capabilities of every RamSeries module is given next:
BASIC features a 3D Finite Element (FEM) analysis package in linear static conditions. The advanced FEM technology provides rich functionality, allowing combination of beams, shells and solid elements, advanced constraints definition, disconnection of degrees of freedom (ball/ cylindrical-joint), flexible load definition and combination of load cases.
DYNSOL includes the latest technology for dynamic analysis of structures, featuring different types of dynamic analyses including step-by-step direct integration, modal/vibration and seismic analysis. The module supports static and dynamic load definition, either by analytical functions or data tables, response spectra and several modes of damping definition.
COMPOSITE offers advanced utilities to analyze structures made of beam or shell laminated composites, and provides an intuitive interface to define materials, laminate sequences and ply direction, based on geometric lines orientations or local or global frames of reference. RamSeries can manage a global database of predefined sequences and materials to be shared by a design team. It is possible to display stress and deformation results as well as failure criteria for either the global composite or per ply. LaRC04 failure criteria, including six failure modes, and Tsai-Wu criteria are available.
NON-LINEAR features different material constitutive laws in order to analyze complex model behavior. Among others, it includes J2 plasticity for shell elements, including Isotropic or Kinematic hardening. The geometry can be analyzed assuming large displacements for all the element types. Contact-impact algorithms use the most advanced element to element approach. Contacts can be modelled either as frictionless or sticking. Furthermore, this module includes specific tools for marine and offshore engineering applications, including stiffened shells, static and dynamic wave loads, panel buckling and fatigue assessment tools.
COUPLING offers seamless communication with Tdyn’s Heatrans and Ransol modules for thermo-mechanical and coupled fluid-structure analyses (aero/hydro-elasticity). Furthermore, this module features one-way and two-way interaction links to the Tdyn’s seakeeping package SeaFEM, allowing to perform the most advanced wave-structure interaction studies.
RamSeries pre-processing tools allow the generation of any CAD geometry and support importation of standard CAD files by using standard IGES, PARASOLID and DXF formats, among others. RamSeries meshing technology includes a suite of tools to create automatically, high quality unstructured, structured and semi-structured meshes of different element types.