Simulation-Based Design and Optimization of Accelerometers Subject to High-Temperature and High-Impact Loads

Area of Science:

• Mechanical Engineering
• Materials Science
• Sensor Technology

Background:

• Accelerometer performance evaluation under extreme conditions (high temperature, high impact) is complex due to multi-factor coupling.
• Accurate design-phase assessment is crucial for reliability and preventing malfunction or failure.

Purpose of the Study:

• To optimize accelerometer design using a simulation-based method.
• To address uncertainties and enhance simulation fidelity for performance evaluation.
• To identify critical factors influencing accelerometer performance under thermal and impact loads.

Main Methods:

• Implementing a simulation-based approach for accelerometer design optimization.
• Incorporating fastener preloading conditions into static analysis.
• Defining comprehensive loadings (bolt preloads, thermal, impact) in a virtual dynamic prototype.

Main Results:

• Static and dynamic analyses revealed that accelerometers risk malfunction or failure at elevated temperatures.
• Thermal properties of sensing components were identified as the most critical factors for desired accelerometer performance.
• Optimization of the sensing element's thermal expansion coefficient was achieved through the simulation-based method.

Conclusions:

• Simulation-based design optimization is effective for accelerometers facing high-temperature and impact loads.
• Thermal expansion coefficient is a key parameter for ensuring accelerometer reliability and performance.
• The proposed simulation methodology enhances design fidelity and reduces uncertainties in extreme environments.