<p>CSEI at cseinc.org provides stress analysis utilizing finite element analysis (FEA) for mechanical design and mechanical failure analysis and for fabricated structure design and fabricated structure failure analysis.</p> <p>CSEI at cseinc.org provides stress analysis utilizing finite element analysis (FEA) for product design and product failure analysis.</p> <p>CSEI at cseinc.org utilizes mechanical stress analysis by applying finite element analysis (FEA) to identify mechanical stress in manufactured products and structural stress in fabricated structures subjected to failure analysis.</p>

Analysis Overview


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Structural and mechanical designs may take many forms, but usually rely on analysis or testing to verify the design will meet the functional requirements over the expected life of the new structure or product. Analysis of structures and products, up-front in the design process, will reduce the amount of testing required to verify the design. For complex structure and product designs, the common analysis tool is a finite element analysis program. These programs must provide a wide range of analysis capabilities in order to allow the designer or analyst to throughly evaluate the design of structures and manufactured products operating in a variety of in-service and extreme environments. CSEI has successfully applied major finite element analysis programs to the design and analysis of many complex structures and manufactured products.

Structural And Manufactured Product In-Service Performance

Structural design and analysis of load bearing members and connections will reduce risk of premature failures caused by overload, vibration, and other major environmental events.

Product design and analysis will reduce manufacturing and future service costs, reduce risk of premature fatigue failures, and reduce time for product introduction to market by reducing the number of prototype designs and testing.

Structural analysis - Structural systems, components, and connections may be evaluated using approximations of the service and extreme environments. Application of finite element analysis (FEA) to the design of structures can increase your understanding of the response of the structure to the service and extreme environments and provide confidence that the structure will withstand all predicted loadings over the expected life of the structure.

Vibration analysis - Coupling of a structure or product modal characteristics with the frequency and energy content of a forcing phenomena, such as seismic and machine vibration, may generate significant forces in a structure or product. Applying finite element analysis procedures for evaluation of the dynamic or vibration response of structures or products, will significantly increase your understanding of the response and provide a tool to modify that response to extend the expected life of the structure or product.

Thermal analysis - Thermal analysis is used to determine the heat accumulation or dissipation throughout a product. Heat flow through a product can be evaluated using finite element analysis procedures. In addition, constrained structures or products will develop thermally induced stress that can be determined with finite element analysis, and modified to extend the expected life of the structure or product.

Fatigue and fracture analysis - Structures and products may fail in-service prior to the expected, or design, life of the structure or product. A service environment containing dynamic or vibration characteristics has the potential for causing premature failure of structures or products. Stress-life fatigue procedures may be applied to the analysis of structures or products to determine cycles to failure. Strain-life fatigue procedures may be applied to the analysis of structures or products to determine cycles to crack initiation. Linear elastic fracture mechanics (LEFM) may be applied to the analysis of structures or products to determine the life expectancy from crack initiation to final fracture and failure.

Electromagnetic analysis - Analysis of electrostatic and magnetic fields passing through and around a structure or product, provides insight into the thermal, displacement, and stress response of the structure or product, and provides a means for regulating these fields to attain specific responses. Effective electromagnetic analysis of structures and products is possible using finite element analysis procedures.

Examples Of Coupled-Field Analyses

Thermal-Structural Analyses - Performed when a structure or product is subjected to significant thermal loads in addition to structural loads.

Fluid-Structural Analyses - Performed when a structure or product is subjected to significant fluid (air, water, etc.) loads in addition to structural loads.

Electromagnetic-Structural Analyses - Performed when a structure or product is subjected to significant electromagnetic loads in addition to structural loads.

Manufacturing, Fabrication, and Assembly

Stresses generated from manufacturing operations such as casting, forging, heat treating, welding, machining, fabrication, and assembly, can be readily evaluated prior to production. Analysis can determine if deformation or stress related problems are likely to develop as a result of manufacturing or assembly of structural and product components.

Casting and Forging - Solidification modeling of complex castings can significantly reduce casting porosity and improve casting yields. Large strain analysis of forging operations can provide residual strains/stresses generated in products and provide estimates of product "spring back".

Assembly and Residual Stresses - Complex deformations and stresses develop in products during manufacturing, fabrication, and assembly. These deformations and stresses can be quantified, and in many cases manipulated, to improve the strength and life of engineered products.


CSEI - Application of finite element analysis in the design process