66 results about "Elastic analysis" patented technology

It is an object of the present invention to accomplish both improvement of a calculation precision and reduction of a calculation time in prediction of a welding distortion of a large welded structure. A method of modeling a welded structure subjected to analysis by generating a mesh and performing thermo-elastic-plastic analysis thereon constructs a global model of the welded structure, and extracts a local model including a welded part from the global model. Next, the method constrains a boundary part of the extracted local model with the remaining portion of the global model, performs thermo-elastic-plastic analysis, and pastes the local model including the analysis result of the thermo-elastic-plastic analysis on the remaining portion of the global model, thereby reconstructing the global model. Thereafter, the method releases the constraint on the boundary part, and performs elastic analysis on the global model, thereby calculating a distortion of the welded structure.

A system and method of performing aeroelastic analysis using a neural network. Input parameters, such as mass and location, contributing to aeroelastic characterization are determined and constrained. A model of a structure to be analyzed can be constructed. The model can include a number of locations where the input parameters can be varied. The aeroelastic characteristic of the structure can be analyzed using a finite element model to determine a number of output characteristics, each of which can correspond to at least one of a plurality of input samples. A neural network can be generated for determining the aeroelastic characteristic based on input parameters. The input sample / output characteristic pairs can be used to train the neural network. The weights and bias values from the trained neural network can be used to generate a non-linear transfer function that generates the aeroelastic characteristic in response to input parameters.

A method for analyzing the elasticity of vessel walls based on finite element deformation theory belongs to the medical image analysis field. The elasticity of the vessel wall is analyzed by calculating strain characteristic values of the vessel wall in an IVUS image under pressure. An ultrasound transducer hovers in a certain position of a blood vessel lumen for acquiring images of a plurality of cardiac cycles; and the images are input into a computer for processing. The method comprises that: a template matching method is used for searching out matching points of marking points in an original image in a template image; the vessel wall is divided into a plurality of layers according to the organization characters of the vessel wall; a method for calculating the elasticity of the vessel walls based on finite element partition is provided; the vessel walls are divided into a plurality of conjoined triangles according to the characteristics of triangle infinite element strain; with a view to the interaction of the triangles in deformation, factors of influence are also added into the calculation of the strain value. The limitations existing in the existing method for analyzing the elasticity of the vessel walls are changed. The characteristics of pathological changes of the vessel walls are exactly portrayed, thus creating conditions for the analyzing of pathological changes.