In order to analyze the acceleration sensor dynamic characteristic

modal analysis

transient and harmonic response analysis are completed.The former six natural frequencies and mode shapes of the sensor are obtained through modal analysis

the amplitude frequency characteristic of the sensor is acquired by harmonic response analysis and transient analysis

and the characteristic of dimension coupling is known.Simulation experiment result indicates that the sensor’s first and second-order

the fourth and fifth-order mode shapes are the same

the frequency is close.When the sensor gets the axial load

axial and horizontal direction exist sizeable dynamic coupling.When it gets the horizontal direction load

the axial coupling is biggish

but another horizontal direction coupling is small.