Our staff has extensive experience in stress analysis, design and assessment of component in accordance with design code and standards. The company uses state-of-the-art numerical simulation software which includes implicit, and explicit (hydrocodes) FEM codes.
LINEAR ELASTIC AND ELASTIC PLASTIC STRESS ANALYSIS
Design and assessment of structural components require to comply with specifications prescribed into codes and standards such as ASME, ECC-M, API, DNV and others. In compliace with these codes, computational stress analysis can be use as alternative to design-by-rule methodology. At TECHDYN Engineering, we pay particular attention in developing structural models capable to provide accurate solutions of the "effective" stress field. This includes a correct mesh size selection in order to avoid unrealistic stress concentrations and mesh sensitivity analysis to qualify the calculated stress values. Simulation capabilities includes:
quasi-static stress analysis
limit load analysis
dynamic transient analysis.
THERMOMECHANICAL PROCESSING SIMULATION
Numerical simulation can provide an exceptional contribution to process and product development. This is the case of a number of thermomechanical processes in which the material undergo large plastic deformation and temperature variation due to the process temperature and internal heat generation. TECHDYN Engineering has long time experience in simulation of such processes. This includes numerical simulation of forging and hot working using sophisticated constitutive modeling which includes microstructure evolution.
Welds are critical locations. Advanced numerical simulation can support better understanding of the effective residual state of stress. At TECHDYN Engineering, using MSC MARC, we can simulate the weld process,provided the WPS, to account for residual stresses, plastic strain and microstructure evolution.
The model is avaliable in FEM code MSC MARC r2013. Recently, the damage model has been extended incorporating a stochastic formulation for damage parameters. This feature allows the possibility to account for material statistical variability and to break symmetries.