An Introduction to Non-Linear Finite Element Analysis
As the complexity of new and innovative structures is imagined, the need for more advanced simulation tools is rising. Advanced Finite Element (FE) Modeling has become a prevalent tool in both the design and assessment of new products and structures. Linear analysis is now the norm with design structure calculated and assessed against the elastic limiting feature. However, a new normal is now emerging for onshore and offshore structures: Non-linear FE assessments.
In some cases, particularly with existing items of plant and equipment or structures, the elastic limiting feature cannot be readily changed or retrofitted without significant cost. Therefore, non-linear FE assessment is required to better understand and demonstrate that some plastic behavior (slip, separation or deformation) is acceptable.
What We Cover:
- Linear vs. Non-Linear Analysis
- Non-linearities: What they are and when it is appropriate to use them
- Simple, real-world applications
Andrew Buckley, Principal Engineer, ABS Group
With over 20 years of experience working for engineering consultancies, Andrew specializes in Finite Element Analysis (FEA) and simulation for a variety of clients across the country. His project experience includes analyzing several non-linear problems and projects under various loading conditions. This expertise has made him a highly sought-after specialist when considering dynamic loadings such as seismic and blast for structures and buildings, as well as small, detailed seals and fixings. While Andrew primarily uses ABAQUS for his analysis, he also has experience with ANSYS, LS-DYNA and other packages.
About ABS Group
ABS Group of Companies, Inc. (www.abs-group.com), through its operating subsidiaries, provides technical advisory and certification services to support the safety and reliability of high-performance assets and operations in the oil, gas and chemical, power generation, marine, offshore and government sectors, among others. Headquartered in Houston, Texas, ABS Group operates with more than 1,000 professionals globally. ABS Group is a subsidiary of ABS (www.eagle.org), a leading marine and offshore classification society.