57results about How to "Reliable Simulated Values" patented technology

The invention relates to a method for checking the stress strength of a torsion tube of an external offset non-coaxial cab stabilizer bar, and belongs to the technical field of vehicle cab suspension. The present invention establishes the bending load coefficient of the torsion tube by using the relationship between the bending and torsional deformation of the torsion tube and the relationship between the external offset non-coaxial cab stabilizer bar system and the torsion tube's structural parameters, material characteristic parameters and load , and through the bending normal stress and torsional shear stress of the torsion tube, a method for checking the torsion tube stress strength of the external offset non-coaxial cab stabilizer bar is established. Through example calculation and ANSYS simulation verification, it can be seen that this method can obtain accurate and reliable calculation value of torsion tube stress intensity, which provides a reliable stress intensity check method for the design of cab stabilizer bar system. Using the method can improve the design level, quality and performance of the stabilizer bar system in the cab, and improve the driving comfort and safety of the vehicle; at the same time, it can also reduce design and test costs and speed up product development.

The invention relates to an optimal design method for the optimal damping ratio of a secondary vertical mount of a high-speed rail vehicle, and belongs to the technical field of high-speed rail vehicle mounts. The present invention constructs the vertical vibration optimization design simulation model of the secondary vertical suspension system, takes the random input of track height irregularity as the input excitation, and takes the minimum root mean square value of the vibration acceleration of the vertical motion of the car body and bogie frame as The design goal is to optimize the design to obtain the optimal damping ratio of the secondary vertical mount system based on comfort and safety, and then calculate the optimal damping ratio of the secondary vertical mount. Through the design example and SIMPACK simulation verification, it can be seen that the method can obtain the accurate and reliable optimal damping ratio of the secondary vertical mount system, and provides a reliable design method for the design of the damping ratio of the secondary vertical mount of rail vehicles. Using this method can not only improve the design level of the suspension system of the high-speed rail vehicle and the ride comfort and safety of the vehicle, but also reduce the product design and test costs.

The invention relates to a design method for the damping coefficient of a transverse shock absorber at the car body end of a high-speed rail vehicle, and belongs to the technical field of high-speed rail vehicle suspension. The present invention establishes a 17-degree-of-freedom lateral vibration optimization design simulation model of a rail vehicle, takes track direction irregularity and horizontal irregularity as input excitations, and takes the minimum root mean square value of the vibration acceleration of the rolling motion of the car body as the design target to optimize The optimal damping coefficient of the transverse shock absorber at the end of the car body is obtained by design. Through the design example and SIMPACK simulation verification, it can be seen that this method can obtain accurate and reliable damping coefficient values ​​of the lateral shock absorbers at the end of the car body, and provide a reliable design for the design of the damping coefficient of the lateral shock absorbers at the end of the high-speed rail vehicle method. Using this method can not only improve the design level of the suspension system of high-speed rail vehicles, but also improve the safety and stability of vehicles; at the same time, it can also reduce product design and test costs, and enhance the international market competitiveness of my country's rail vehicles.

The invention relates to an analytical calculation method for an optimal damping ratio of a secondary lateral mount of a high-speed rail vehicle, and belongs to the technical field of high-speed rail vehicle mounts. The present invention establishes a 1 / 2 car body running yaw vibration model, and takes the best riding comfort of the human body and the minimum lateral force on the wheel set and wheel axle as the design goals, and calculates the secondary lateral suspension based on comfort and safety. The optimal damping ratio of the system is calculated, and the optimal damping ratio of the secondary lateral suspension system is calculated by using the golden section principle. Through the design example and SIMPACK simulation verification, it can be seen that the method can obtain the accurate and reliable optimal damping ratio of the secondary lateral mount system, and provides a reliable design method for the design of the damping ratio of the secondary lateral mount of high-speed rail vehicles. Using this method can not only improve the design level of the suspension system of high-speed rail vehicles, but also improve the ride comfort and safety of the vehicles; at the same time, it can also reduce the design and test costs and enhance the international market competitiveness of my country's rail vehicles.

The invention relates to a design method for the length of a torsion tube of an external offset non-coaxial cab stabilizer bar, and belongs to the technical field of cab suspension. The present invention takes the length of the torsion tube as a parameter, uses the load coefficient expression of the torsion rubber bushing, the equivalent combination line stiffness expression of the rubber bushing, and the equivalent line stiffness expression of the torsion tube to establish the torsion tube of the stabilizer bar Design the mathematical model of the length, and solve the design through the Matlab program. Through the design example and ANSYS simulation verification, it can be seen that the method can obtain accurate and reliable design value of the torsion tube length, which provides a reliable technical basis for the design of the stabilizer bar system and the development of CAD software. Using this method, the design level and quality of the stabilizer bar system can be improved only by adjusting the length of the torsion tube without increasing the product cost, and the design requirements of the roll angle stiffness of the stabilizer bar system can be met, and the ride comfort and performance of the vehicle can be improved. Safety; at the same time, design and test costs can also be reduced.

The invention relates to a method for synergistically optimizing the damping ratio of a high-speed rail seat and a vertical suspension of the first series and the second series, and belongs to the technical field of high-speed rail vehicle suspension. The present invention constructs the vertical vibration collaborative optimization simulation model of the seat and the primary and secondary vertical suspension systems, takes the random input of track height irregularity as the input excitation, and takes the minimum root mean square value of the vertical vibration acceleration of the seat as The design goal is to optimize the design to obtain the optimal damping ratio of the high-speed rail seat mount and the primary and secondary vertical mounts. Through the design example and SIMPACK simulation verification, it can be known that this method can obtain the optimal damping ratio of the high-speed rail seat suspension and the primary and secondary vertical suspension systems accurately and reliably. The design of the suspension damping ratio provides a reliable design method. Using this method can not only improve the design level of the high-speed rail suspension system and the ride comfort of the vehicle, but also shorten the product design cycle and enhance the international market competitiveness of my country's rail vehicles.