A pinning release simulation test device and its application method
A technology of simulation test and test piece, applied in the field of dynamic test, which can solve the problems that overload simulation cannot be realized and simultaneous assessment cannot be realized, and achieve the effect of low investment cost
Active Publication Date: 2017-12-22
BEIJING INST OF STRUCTURE & ENVIRONMENT ENG +1
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Problems solved by technology
However, the overload simulation cannot be realized on the vibration table or impact table
For overload, take static assessment or overload assessment on centrifuge, and cannot realize simultaneous assessment with transient vibration
Method used
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[0035] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings.
[0036] This embodiment provides a pinning release simulation test device, the overall structure of which is as follows figure 1 As shown, it includes test tooling 1, tension system 2, release mechanism 3, protection system 4 and measurement system.
[0037] The test fixture 1 is used to install the test piece 5 and provide a force point, and its structure is as follows figure 2 As shown, it includes an upper beam 1-1, four tie rods 1-2 and a lower beam 1-3. The upper beam includes two I-beams that cross each other perpendicularly, and an upper beam plate 1-4 is fixedly connected to the lower part of the intersection; The lower beam 1-3 also includes two I-beams perpendicular to each other, the upper part of the intersection is fixedly connected with a lower beam plate 1-5, and the lower beam plate 1-5 also has an annular plate 1-6 for insta...
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The invention belongs to the technical field of dynamics tests, and specifically relates to a hold-down release simulation test device and an application method thereof. The technical scheme is as follows: a test tool is internally provided with a cavity used for installing a test article; the upper part of the test tool is connected with a tension system which is used for simulating thrust of a take-off stage; a lower part connection release mechanism used for controlling release of the test tool; a protection system used for protecting safety of the test tool and the test article; and a measuring system used for measuring response on the test article during a test. The method includes the following steps: a test article is installed, and is connected with the tension system and the release mechanism in sequence, and predetermined loading force is estimated; the release mechanism is suddenly unlocked when receiving an unlocking signal, the lower end of the test tool is released, continuous flying of the test article is limited through the protection system, and the measuring system records response of overload, oscillation and strain at each measuring point of the test article in a test process. The beneficial effects are that comprehensive simulation of overload and transient oscillation in hold-down release of a single machine and a section-level test article can be realized, the input cost is small, and the simulation is real.
Description
technical field [0001] The invention belongs to the technical field of dynamic tests, and in particular relates to a pinning release simulation test device and a use method thereof. Background technique [0002] The pinned-release launch has been widely used in rocket launch as a basic launch method in foreign countries. The carrier rocket launched by pinning and release is in a pinning state from the start of ignition until the engine thrust reaches the take-off thrust, and is released under control once the specified take-off thrust is reached. Since the containment and release launch method can improve the reliability and accuracy of rocket launches, our country has also begun to study the launch of this method in future models. [0003] During the pinning release launch, the rocket is in the pinning state until the thrust reaches a certain threshold after ignition. When the thrust reaches the threshold, the pinning mechanism is opened, giving the rocket a transient acce...
Claims
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IPC IPC(8): G01M13/00B64G5/00
Inventor 肖健李会娜王求生张菩仁韦冰峰吴强张永杰
Owner BEIJING INST OF STRUCTURE & ENVIRONMENT ENG