Research On Mechanical Properties Of Asymmetric Electromechanical Variable Section Cantilever Beams

In the test technology,the sensor signal amplification technology has been the main research direction in the industry.It is necessary to improve the efficiency of the response unit of the core component of the sensor detection signal.Therefore,a new electromechanical response structure of asymmetric variable cross-section cantilever beam is established in this paper.The asymmetry factor is analyzed and the optimal inclination angle is about 50 ° and the width thickness ratio is 1.2 Compared with the traditional symmetrical beam,the displacement response is 1.9 times and the power response is 2 times.Furthermore,a recursive deformation model is established by studying the response of the internal structural elements.The relevant dimensions of the variable cross-section beam are determined by the optimal method of the critical stable voltage of the structure,and the influence of various parameters on the response of the structure is studied under the electric field environment.The maximum bearing mass of the variable cross-section beam is calculated to be 11 g by the theory of natural frequency error.Through the study of the end trajectory response,it is found that it has periodicity.The complex random driving environment model is established to explore its response phase diagram under impact and other characteristics,and the response sensitivity of the asymmetric beam is determined.The results show that under the condition of 40 V impulse voltage,when the asymmetric beam is at 600?s,the long-term impulse response is the largest,and when the asymmetric beam is at 3500?s,the impulse response is static.When the random impact force of inclined plane is more than 0.45 N and the driving impact voltage of upper and lower surfaces is more than 9.5V,the mechanical response of inclined plane changes from internal microwave vibration to beam swing.By exploring the local vulnerable area of the structure and analyzing the power response of the vulnerable area under the condition of micro loss,it is shown that the transient energy dissipation response changes abruptly when the micro loss depth exceeds 0.25 mm.By analyzing the spectrum response of multiple microloss regions.Based on the analysis of the local failure area,the model of normal distribution piezoelectric sheet and asymmetric beam is established,and the energy guidance of internal adhesion is studied.Based on the theory of vibration energy,the criterion of adhesion failure is studied.The results show that the critical adhesion failure point of the asymmetric beam is 10.80 mm away from the root under certain environmental conditions.