Fiber-reinforced composite thin shell rotational vibration test bench with consideration of uniformity and temperature gradient
A fiber-reinforced composite, rotating test bench technology, used in vibration testing, machine/structural component testing, measuring devices, etc., can solve problems such as affecting the accuracy of vibration testing, not disclosing thin-shell rotating vibration test benches, etc., and achieve experimental data. accurate effect
Active Publication Date: 2018-12-18
NORTHEASTERN UNIV
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Problems solved by technology
[0003] At present, although there are some test rigs that can test the rotational vibration of metal and composite thin shells, there is no published thin shell rotational vibration test rig that can consider the influence of uniformity and temperature gradients.
In addition, when it rotates at high speed, the existing excitation technology mostly uses the contact excitation method, which has great problems in the excitation effect, which in turn affects the vibration test accuracy
Method used
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[0030] figure 1 is the oblique bimetric diagram of the test bench, figure 2 is the front view of the test bench, image 3 is the top view of the test bench, Figure 4 is the cross-sectional view of the test bench, Figure 5 It is the left side diagram of the excitation mechanism of the test bench after removing the fiber-reinforced composite shell and the mounting plate, Figure 6 It is the right side diagram of the excitation mechanism of the test bench after removing the fiber-reinforced composite shell and the mounting plate, Figure 7 is the sectional view of the excitation mechanism of the test bench, Figure 8 It is the excitation mechanism of the test bench to remove the fiber-reinforced composite thin shell, mounting plate, seat shaft and motor connecting cylinder, Figure 9 It is the middle tube structure diagram, Figure 10 It is the structural diagram of the strut drive, as shown in the figure:
[0031] The fiber-reinforced composite thin-shell rotating test...
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The invention relates to the field of vibration test, and specifically discloses a high-intensity aerodynamic load excited fiber-reinforced composite thin shell rotational vibration test bench with consideration of uniformity and temperature gradient influence. The test bench comprises an integral main body structure, a rotary motor end fiber-reinforced composite thin shell connection structure, amobile pedestal body part connection structure, a test bench aerodynamic load excitation structure, the test bench aerodynamic load excitation structure and a non-contact laser test device. The testbench provided by the invention can realize rotating the fiber-reinforced composite thin shell to perform non-contact high-intensity aerodynamic load excitation and test under the uniformity and temperature gradient influence.
Description
technical field [0001] The invention relates to the field of vibration testing, in particular to a fiber-reinforced composite thin-shell rotating test bench under high-strength aerodynamic load excitation considering the influence of uniformity and temperature gradient. Background technique [0002] Compared with metal thin shells, fiber-reinforced composite thin shells have many characteristics such as light weight, high bearing pressure, good impact resistance, outstanding fatigue resistance, and good insulation. Important fields such as ships, ocean engineering, weapon manufacturing and nuclear industry. In engineering practice, there are a large number of thin-shell structural parts made of this type of material, such as composite material drums for aero-engines, composite pressure-resistant cylindrical shells for submarine submersibles, and high-temperature-resistant composite material shells for liquid rocket engine combustion chambers. bodies, etc., and as their stru...
Claims
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Login to View More IPC IPC(8): G01M7/02
CPCG01M7/02G01M7/027
Inventor 李晖贾辰强李小彭陈曦高志辉于春喜王进闻邦椿
Owner NORTHEASTERN UNIV