Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Integration design of reliability and performance of an electromechanical safety device for a large caliber grenade fuze
| DOI: | 10.11809/bqzbgcxb2024.12.025 |
| Keywords: | fuze electromechanical safety device; integrated design; response surface;optimization model;Monte Carlo simulation |
| Abstract: | To address the issue of balancing performance design and reliability design during the design phase of the fuze electromechanical safety device, an integrated design method for reliability and performance was proposed. Based on the working principles of the fuze electromechanical safety device, the key design parameters affecting the mechanism’s performance reliability were identified as starting torque and charge discharge time constant. Internal disturbance factors included rotational inertia of the balance pendulum, friction coefficient of the rotating shaft, gear meshing efficiency, and reactive force characteristic coefficient. External disturbance factors included speed disturbance and ripple interference. Using the performance simulation model, Latin hypercube sampling was employed for experimental design, and a dataset was constructed to establish the corresponding response surface model. Considering the fluctuations of disturbance factors, a reliability simulation model was developed. With reliability indices as constraints and the value function of multiple performance outputs as the optimization objective, a basic optimization model for the integrated design of the fuze electromechanical safety device was constructed. The Monte Carlo simulation method was used to solve the optimization model.The optimization results show that when the key design parameters—starting torque and charge discharge time constant—are 27.98 N·m and 3.34×10-4, respectively, the performance output remains within the specified range. The reliability increases by 3.84% compared to the original value, meeting the design reliability requirements, which verifies that this method effectively combines performance design and reliability design. |
| Issue: | Vol. 45 No. 12 (2024) |
| Published: | 2024-12-30 |
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