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Design of cast steel nodes
1、ABAQUS can automatically select the corresponding load increment and convergence limit. It can not only select appropriate parameters, but also continuously adjust parameters to ensure accurate solutions are effectively obtained during the analysis process. Basic Overview of Nodes
The material shall comply with the relevant provisions of G20Mn5QT in the Technical Specification for Application of Cast Steel Nodes, and its chemical composition and mechanical properties shall comply with the provisions in the table below:
After quenching and tempering heat treatment, the mechanical properties of the steel castings should meet the requirements in the table below:
Material constitutive relationship The plastic constitutive relationship of materials in ABAQUS requires input of true stress plastic strain data, and the conversion formula is as follows: The correlation between nominal strain and real strain
The correlation between nominal stress and true stress
Plastic strain:
The true stress-strain curve obtained from the above conversion formula The elastic modulus of G20Mn5QT steel is 2.06 × 105N/mm 2， The Poisson's ratio is 0.3, and the true stress-strain curve of G20Mn5QT input in ABAQUS is as follows.
Plastic Strain（XE-3mm）
True stress-strain curve of G20Mn5QT steel Finite element analysis of 3 cast steel nodes 3、Node Overview 3、1 Node Overview This node is located at the intersection of two directional inverted triangular trusses and plays an important role in overall safety. It is a multi rod connection node with complex boundaries and forces, requiring finite element analysis. 3、2 Elastic Analysis Results 3、3Stress cloud map | ||||||||||||||||||||||
