Lightweight Threshing Rack under Multisource Excitation Based on Modal Optimization Method

Table 3

Property values of rack materials.

Serial number	Attribute name	Numerical value	Unit
1	Elastic modulus	206 × 10^9	Pa
2	Poisson’s ratio	0.30	—
3	Density	7800	kg/m^3
4	Yield strength	235 × 10^6	Pa
5	Strength limit	(375∼500) × 10^6	Pa