FEMFAT performs fatigue analyses in
combination with widely used finite element
programs. Commonly used interfaces to multi-body,
optimization and measurement systems are employed to
ensure full and convenient integration into the
customer’s CAE processes. FEMFAT provides engineers
with reliable information on the fatigue life of
structures to improve critical locations and/or
reduce the total weight at an early stage of the
design process, long before time and cost consuming
tests are scheduled. This results in high-level
accurate prototypes and less tests.
FEMFAT takes many important and interacting fatigue
influences into consideration; for example material
properties, notches, mean stresses, surface
roughness, surface boundary layers, temperature
field, plasticity, mechanical and/or chemical
surface treatments, component sizes, special
behaviour of welds, spot welds, self piercing
rivets, multi-axial loading, static, dynamic,
linear, non linear effects and much more. It is
possible to use combinations of modules to solve
problems correctly.
Methods and Verification
The methods used in FEMFAT are based
on the latest scientific findings of the German FKM
guidelines, on the work of Huck / Thrainer / Schutz
(synthetic S/N curves), on the local stress-strain
model (TU - Darmstadt), on the R1MS concept for
assessment of welding seams and on ECS-proprietary
methods, for example spot joints. In addition to
this, methods applicable to FEM were developed, such
as computing notch influence in terms of the
relative stress gradient or consideration of the
interaction of different stress tensors by using the
critical cutting plane method. All these hypothesis
have been checked by comparing numerous test series
with fatigue analysis results and have been verified
during many years of practical use.
FEMFAT
Interfaces |
- ABAQUS
- ADAMS
- ANSYS
- COSMOS
- DIADEM
- HYPERMESH
- I-DEAS
- LS-DYNA
- MARC
- MEDINA
- MoldFlow
- NASTRAN
- nCode
- PATRAN
- PERMAS
- Pro/MECHANICA
- RPC
- SIMPACK
- TECMAT
- TOSCA
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