WO2020042203A1 - Banc d'essai de vibration rotatif à enveloppe mince composite renforcé par des fibres tenant compte de l'uniformité et du gradient de température - Google Patents

Banc d'essai de vibration rotatif à enveloppe mince composite renforcé par des fibres tenant compte de l'uniformité et du gradient de température Download PDF

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Publication number
WO2020042203A1
WO2020042203A1 PCT/CN2018/103949 CN2018103949W WO2020042203A1 WO 2020042203 A1 WO2020042203 A1 WO 2020042203A1 CN 2018103949 W CN2018103949 W CN 2018103949W WO 2020042203 A1 WO2020042203 A1 WO 2020042203A1
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WIPO (PCT)
Prior art keywords
reinforced composite
fiber
composite thin
heating tube
motor
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Application number
PCT/CN2018/103949
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English (en)
Chinese (zh)
Inventor
李晖
贾辰强
李小彭
陈曦
高志辉
于春喜
王进
闻邦椿
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东北大学
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Application filed by 东北大学 filed Critical 东北大学
Publication of WO2020042203A1 publication Critical patent/WO2020042203A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/027—Specimen mounting arrangements, e.g. table head adapters

Definitions

  • the invention relates to the field of vibration testing, in particular to a fiber-reinforced composite thin-shell rotating test stand under the consideration of high-strength aerodynamic load under the influence of uniformity and temperature gradient.
  • fiber-reinforced composite shells Compared with metal shells, fiber-reinforced composite shells have many characteristics such as light weight, high load pressure, good impact resistance, outstanding fatigue resistance, and good insulation properties. They are currently being increasingly used in aerospace, Ships, marine engineering, weapon manufacturing, and nuclear industries. In engineering practice, there are a large number of thin shell structural parts made of this type of materials, such as composite drums for aero engines, pressure-resistant composite cylindrical shells for deep-sea submersibles, and high-temperature-resistant composite shells used in the combustion chamber of liquid rocket engines. And so on, and as their structure becomes more and more complex, and their working environment becomes more and more severe, their vibration problems become more and more prominent.
  • test benches that can test the rotational vibration of thin shells of metal and composite materials
  • thin shell rotational vibration test benches that can consider the effects of uniformity and temperature gradients.
  • the existing excitation technology mostly uses a contact excitation method, and there is a great problem in the excitation effect, which further affects the accuracy of the vibration test.
  • the present invention provides a fiber-reinforced composite thin-shell rotating test stand under the excitation of high-strength aerodynamic loads considering the effects of uniformity and temperature gradient.
  • the position of the moving base is adjusted by a screw to install the fiber-reinforced composite thin-shell.
  • On the mounting plate the left end is fixed by the mounting plate, and then the position of the moving seat is adjusted by a screw, so that the right mounting plate contacts the fiber-reinforced composite thin shell, and the right side is fixed by the mounting plate.
  • Rotary motor is used to accelerate the fiber-reinforced composite thin shell; by adjusting different parameters by controlling the lead screw motor, middle tube motor and heating tube motor, the air compressor is turned on to excite the fiber-reinforced composite thin shell.
  • the fiber reinforced composite thin shell rotating test stand under the excitation of high-strength aerodynamic load considering the influence of uniformity and temperature gradient includes the integral fuselage structure, the fiber reinforced composite thin shell connection structure at the rotating electrical machine end, the connection structure at the moving base, and the aerodynamic load of the test bed Excitation structure, test bench aerodynamic load excitation structure and non-contact laser test equipment.
  • the integrated fuselage structure includes a fuselage, a mobile base, a mobile base screw, and a rotary electric machine; the two ends of the fuselage are a base structure, and a rotary motor and a mobile base are respectively installed, and the mobile base is installed on the machine
  • the moving base screw on the body rotates to move.
  • the fiber reinforced composite thin shell connection structure of the rotary electric machine end includes a fiber reinforced composite thin shell, a rotary electric machine connecting plate, a left heating pipe mounting plate, and a left connecting socket of the heating pipe; a rotary electric machine connecting plate is mounted on the rotary electric machine, and the rotary electric machine There is a left-side heating tube mounting plate on one side of the connecting plate.
  • the left-side connection seat of the heating tube is installed on the left-side heating tube mounting plate.
  • the fiber-reinforced composite thin shell is connected to the left-side heating tube mounting plate through the fiber-reinforced composite thin-shell mounting plate.
  • the fiber-reinforced composite thin-shell mounting plate and the left-side heating tube mounting plate are made of heat-insulating material.
  • the connection structure at the moving base body includes a base body shaft, a motor connecting cylinder, a right-side heating tube mounting plate, a right-side heating tube connecting base, a screw motor, an inner cylinder motor and a heating tube motor; the base shaft is installed on the moving base.
  • a motor connecting cylinder is installed at one end of the shaft of the base body, and a heating tube mounting plate on the right side of the motor connecting tube is installed on the right side of the heating tube.
  • the fiber reinforced composite shell is connected to the fiber reinforced composite shell.
  • the thin-shell mounting plate is connected to the right-hand heating tube mounting plate, and the lead screw motor, the inner tube motor and the heating-tube motor are sequentially concentrically installed in the motor connecting tube; the fiber-reinforced composite thin-shell mounting plate and the right-side heating tube mounting plate are Thermal insulation material.
  • the aerodynamic load excitation structure of the test bench includes a middle cylinder, an inner cylinder, a spool, a spool screw, an air duct, and an air compressor; a middle cylinder is installed in the middle of the left heating tube mounting plate, and there are small holes in the middle cylinder.
  • the other end of the middle tube can be inserted into the right-hand heating tube installation plate after the auxiliary material tube is installed; the inner tube is placed in the center of the middle tube and connected to the inner tube motor.
  • the inner tube has the same small holes as the middle tube;
  • the column is placed in the inner cylinder.
  • the slider can be controlled and moved by the slider screw.
  • the slider screw is installed on the screw motor.
  • the air compressor is connected to the seat shaft through the air duct.
  • the seat shaft and the motor connection cylinder are hollow.
  • the gas enters the fiber-reinforced composite thin shell through the motor connection cylinder for excitation;
  • the aerodynamic load excitation of the test bench is non-contact excitation, and the excitation position can be adjusted by controlling the opening and closing state of the small hole in the middle cylinder.
  • the fiber reinforced composite thin shell has flange structures at both ends for installation.
  • the fiber reinforced composite thin shell mounting plate has four pieces, and two pieces on each side are used for the installation of the fiber reinforced composite thin shell.
  • the heating pipe connection seat is divided into left and right sides, six on each side, and are installed in the left connection seat moving groove and the right connection seat moving groove on the left heating pipe mounting plate and the right heating pipe mounting plate;
  • the left side of the tube is different from the right side of the heating tube.
  • the right side of the heating tube has a long shaft at the end. The long shaft end is connected to the motor connection plate through the heating tube link.
  • the motor connection plate is installed on the heating tube motor.
  • the heating tube motor rotates, and the heating tube is controlled by the heating tube connecting rod, so that the heating tube connection seat is moved in the right connection seat moving groove and the left connection seat moving groove to realize the adjustment of the distance between the heating pipe and the fiber-reinforced composite thin shell.
  • the base body shaft is a hollow cylindrical end connected with an air compressor and an air duct, and the front end is connected with a motor connection disk.
  • the inner cylinder is placed in the middle cylinder, and the rotation of the inner cylinder can control the closing of the small holes in the middle cylinder; when the small holes of the inner cylinder and the inner cylinder are opened, the position of the aerodynamic load excitation can be controlled by the movement of the slide column; the slide column is an internal hollow cylinder, The central part is connected to the lead screw.
  • the test bed controls the distance between the heating tube and the fiber-reinforced composite thin shell through the connecting rod structure, thereby achieving temperature gradient control; the opening and closing of the small hole can be achieved through the cooperation of the middle tube and the inner tube, and the position of the slider can be adjusted to achieve the excitation position ; Rotate the motor to drive the fiber-reinforced composite shell for high-speed rotation. Both the temperature control and the excitation position adjustment are controlled by a motor, which facilitates automatic and precise control and makes the obtained experimental data more accurate.
  • the test rig can realize the non-contact high-intensity aerodynamic load excitation of the rotating fiber reinforced composite thin shell under the influence of uniformity and temperature gradient.
  • the installation plate, the left-side heating pipe mounting plate, and the right-side heating pipe mounting plate of the invention are heat-insulating materials. After installation, the fiber-reinforced composite thin shell can be insulated to keep its temperature constant.
  • Figure 1 is an oblique view of the test bench
  • Figure 2 is a front view of the test stand
  • Figure 3 is a plan view of the test stand
  • Figure 4 is a sectional view of the test bench
  • Figure 6 is a right side view of the test bench excitation mechanism with the fiber reinforced composite shell removed and the mounting plate;
  • Figure 7 is a sectional view of the test bench excitation mechanism
  • Figure 8 shows the test bench excitation mechanism with the fiber-reinforced composite thin shell removed, the mounting plate, the seat shaft, and the motor connecting cylinder;
  • Figure 9 is a structural diagram of the middle tube
  • FIG. 10 is a structural diagram of a spool transmission.
  • Figure 1 is an oblique view of the test rig
  • Figure 2 is a front view of the test rig
  • Figure 3 is a plan view of the test rig
  • Figure 4 is a cross-sectional view of the test rig
  • Figure 5 is the left side of the test rig excitation mechanism with the fiber reinforced composite shell removed and the mounting plate
  • Figure 6 is the right side view of the test bench excitation mechanism with the fiber reinforced composite shell removed and the mounting plate
  • Figure 7 is a sectional view of the test bench excitation mechanism
  • Figure 8 is the test bench excitation mechanism with the fiber reinforced composite shell removed, the mounting plate, and the base.
  • Shaft and motor connection cylinder Figure 9 is the structure diagram of the middle cylinder
  • Figure 10 is the structure diagram of the transmission of the spool, as shown in the figure:
  • the fiber reinforced composite thin shell rotating test stand under the excitation of high-strength aerodynamic load considering the influence of uniformity and temperature gradient includes the integral fuselage structure, the fiber reinforced composite thin shell connection structure at the rotating electrical machine end, the connection structure at the moving base, and the aerodynamic load of the test bed Excitation structure, test bench aerodynamic load excitation structure and non-contact laser test equipment.
  • the integrated fuselage structure includes a fuselage 1, a movable base 6, a movable base screw 5, and a rotary electric machine 13.
  • the two ends of the fuselage 1 are base structures, and the rotary electric machine 13 and the movable base 6 are respectively installed.
  • the mobile base 6 is moved by rotating the mobile base screw 5 mounted on the body.
  • the fiber reinforced composite thin shell connection structure at the end of the rotating electric machine includes a fiber reinforced composite thin shell 2, a rotating electric machine connecting plate 12, a left heating pipe mounting plate 11, and a left connecting socket 14 of the heating pipe; a rotating electric machine is installed on the rotating electric machine 13
  • the connection plate 12 has a left-side heating pipe mounting plate 11 on one side of the rotating electrical machine connection plate 12 and a left-side connection seat 14 of the heating pipe is installed on the left-side heating pipe mounting plate 11.
  • the fiber-reinforced composite thin shell 2 is passed through the fiber-reinforced composite thin shell
  • the mounting plate 10 is connected to the left heating pipe mounting plate 11; the fiber reinforced composite thin shell mounting plate 10 and the left heating pipe mounting plate 11 are heat-insulating materials.
  • the connection structure at the moving base includes a base shaft 7, a motor connecting cylinder 8, a right-side heating tube mounting plate 9, a right-side heating tube connecting base 17, a lead screw motor 21, an inner tube motor 22, and a heating tube motor 23.
  • the base shaft 7 is mounted on the mobile base.
  • a motor connecting cylinder 8 is installed at the end of the base shaft 7.
  • the motor connecting cylinder 8 is provided with a right-side heating tube mounting plate 9 and a right-side heating tube 17 is installed on the right-side heating tube.
  • the fiber-reinforced composite thin shell 2 is connected to the right-hand heating tube mounting plate 9 through the fiber-reinforced composite thin shell mounting plate 10.
  • the lead screw motor 21, the inner cylinder motor 22 and the heating tube motor 23 are sequentially concentrically mounted on the motor.
  • the fiber reinforced composite thin shell mounting plate 10 and the right heating tube mounting plate 9 are made of heat insulating material.
  • the aerodynamic load excitation structure of the test bench includes a middle cylinder 16, an inner cylinder 26, a spool 27, a spool screw 20, an air duct 4, and an air compressor 3; a middle cylinder 16 is installed in the middle of the left heating tube mounting plate 11. There is a small hole in the middle tube. The other end of the middle tube 16 can be inserted into the right-hand heating tube mounting plate 9 after the auxiliary material tube is installed; the inner tube 26 is placed in the center of the middle tube 16 and connected to the inner tube 26 motor.
  • the inner tube 26 has the same small holes distributed on the middle cylinder 16; the slider 27 is placed in the inner cylinder 26, the slider 27 can be controlled and moved by the slider screw 20, and the slider screw 20 is installed on the screw motor 21;
  • the air compressor 3 is connected to the base shaft 7 through the air guide pipe 4, the base shaft 7 and the motor connecting cylinder 8 have a hollow structure, and the gas enters the fiber reinforced composite thin shell through the motor connecting cylinder to be excited; the test bench is aerodynamically excited.
  • the position of the excitation can be adjusted by controlling the opening and closing state of the small hole on the middle tube 16.
  • the fiber reinforced composite thin shell 2 has flange structures at both ends for installation.
  • the fiber reinforced composite thin shell mounting plate 10 has four pieces, and two pieces on each side are used for the installation of the fiber reinforced composite thin shell.
  • the heating pipe connection seat is divided into left and right sides, six on each side, and are installed in the left connection seat moving groove 19 and the right connection seat moving groove 18 on the left heating pipe mounting plate and the right heating pipe mounting plate. ;
  • the left connecting seat 14 of the heating tube is different from the right connecting seat 17 of the heating tube.
  • the end of the right heating tube connecting seat has a long shaft. The long shaft end is connected to the motor connecting plate 24 through the heating pipe link 25.
  • the motor connecting plate 24 Installed on the heating tube motor 23, the heating tube motor 23 rotates, the heating tube is controlled by the heating tube link 25, and the heating tube connection seat is moved in the right connection seat moving groove 18 and the left connection seat moving groove 19 to realize the heating pipe 15 and fiber reinforced composite thin shell 2 space adjustment;
  • the base shaft 7 is a hollow cylindrical end connected with an air compressor 3 and an air guide tube 4, and the front end is connected with a motor connection disk 24.
  • the inner cylinder 26 is placed in the middle cylinder 16, and the rotation of the inner cylinder 26 can control the small hole of the middle cylinder 16 to be closed; when the small holes of the middle cylinder 16, the inner cylinder 26 are opened, the position of the aerodynamic load excitation can be controlled by the movement of the slider 27;
  • the sliding column 27 is an internal hollow cylinder, and the central part is connected to the lead screw.
  • the fiber reinforced composite thin shell 2 In use, first install the fiber reinforced composite thin shell 2 on the experimental table, and fix it with the fiber reinforced composite thin shell fixing plate 10, then connect the test bench to the computer, open the computer operation software and rotate the motor.
  • the heating tube motor 23 is controlled by the computer to adjust the temperature to reach the target temperature, and the inner cylinder motor 22 and the lead screw motor 21 are controlled to adjust the excitation position.
  • the air compressor 3 After the air compressor 3 is opened, the fiber reinforced composite thin shell 2 is aerodynamically excited. The measurement is performed using a non-contact laser device during the excitation, and the experimental data is transmitted to the computer.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

L'invention concerne un banc d'essai rotatif à enveloppe mince composite renforcé par des fibres tenant compte des influences d'uniformité et de gradient de température et sous une excitation de charge aérodynamique à haute résistance, se rapportant au domaine de l'essai de vibration, et comprenant une structure de corps intégrale, une structure de liaison de coque mince composite renforcée par des fibres au niveau d'une machine électrique rotative, une structure de liaison au niveau d'un siège mobile, une structure d'excitation de charge aérodynamique pour le banc d'essai, un siège de raccordement de tuyau de chauffage et un dispositif d'essai laser sans contact. La présente invention peut réaliser une excitation de charge aérodynamique sans contact à haute résistance et essayer une coque mince composite renforcée par des fibres rotative en ce qui concerne l'uniformité et les influences de gradient de température.
PCT/CN2018/103949 2018-08-28 2018-09-04 Banc d'essai de vibration rotatif à enveloppe mince composite renforcé par des fibres tenant compte de l'uniformité et du gradient de température WO2020042203A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810986772.5 2018-08-28
CN201810986772.5A CN109029890B (zh) 2018-08-28 2018-08-28 考虑均匀及温度梯度的纤维增强复合薄壳旋转振动试验台

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WO2020042203A1 true WO2020042203A1 (fr) 2020-03-05

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CN107966259A (zh) * 2017-10-30 2018-04-27 东北大学 纤维增强复合薄壁构件的冲击与热复合试验装置

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CN106370369A (zh) * 2016-08-16 2017-02-01 中国航空工业集团公司沈阳发动机设计研究所 一种高频气体激励试验器
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CN109029890A (zh) 2018-12-18

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