Vehicle Simulation Interface for Heat and Vibration Modeling
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Solution Overview
Problem
Current vehicle integration simulators face challenges in accurately modeling heat and vibration, particularly when dealing with complex structures like motors and gearboxes, where traditional models require inconsistent granularity and lack clear manufacturer responsibility for mutual influence calculations.
Innovation Solution
A simulation program with separate models for calculating vehicle characteristics parameters related to driving force and loss parameters, along with an interface model for conversion calculations, allowing for independent modeling of function and shape without inconsistency, and enabling flexible response to changes in vehicle design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a detailed 3D model is created for accurate simulation, then measurement precision is improved, but device complexity and data processing requirements increase
Solution Approach 1:
The 3D model is divided into multiple mesh elements (nodes and elements) that represent different portions of the stent structure. This segmentation allows accurate geometric representation while enabling efficient parallel processing and reducing computational complexity per element.
Solution Approach 2:
The physical stent structure is replicated as a digital 3D model with identical geometric properties. This virtual copy allows repeated simulations without physical wear, and the model can be modified independently to test different designs while maintaining measurement accuracy.
2Reliability
If complex material properties are incorporated into the simulation, then reliability of simulation results is improved, but computation time increases
Solution Approach 1:
Material properties (hyperelastic, viscoelastic, plastic) are pre-defined and integrated into the simulation model before the actual simulation runs. This preliminary setup allows the simulation to use established constitutive models, improving reliability while reducing computation time during execution.
Solution Approach 2:
The simulation incorporates multiple material models with different parameter sets (hyperelastic, viscoelastic, plastic) that can be selected based on the specific simulation needs. This allows accurate representation of material behavior without requiring complex real-time calculations, balancing reliability and computation time.
3Measurement precision
If contact conditions between stent and vessel are accurately modeled, then measurement precision is improved, but device complexity increases
Solution Approach 1:
A contact algorithm acts as an intermediary between the stent structure and vessel wall models, automatically calculating interaction forces and displacements. This mediator handles the complexity of contact mechanics internally, providing accurate measurement of contact forces without requiring the user to manually model complex contact conditions.
Solution Approach 2:
The simulation incorporates contact detection and force calculation algorithms that continuously monitor and adjust interaction forces between stent and vessel based on their relative positions and deformations. This feedback mechanism ensures accurate measurement of contact mechanics while the algorithm automatically manages the computational complexity.
Data Source
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AI summary
Heat and vibration are modeled for calculation for each structure. Therefore, with a traditional model division for each component, one-to-one correspondence between the models and the components is not necessarily realized. There has been a problem in that it is difficult to divide the models. To solve the above problem, a simulation program according to the present invention includes a first model for calculating a first vehicle characteristics parameter, a second model for calculating a second vehicle characteristics parameter to transfer energy without converting the energy, and an interface model for performing conversion calculation of the first vehicle characteristics parameter and the second vehicle characteristics parameter.