CN114778283A - Multi-cell material complex loading system - Google Patents

Multi-cell material complex loading system Download PDF

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CN114778283A
CN114778283A CN202210376954.7A CN202210376954A CN114778283A CN 114778283 A CN114778283 A CN 114778283A CN 202210376954 A CN202210376954 A CN 202210376954A CN 114778283 A CN114778283 A CN 114778283A
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angle adjustment
loading condition
adjustment device
condition angle
detachably connected
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CN114778283B (en
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罗耿
莫端钰
刘浚哲
柴成鹏
赵剑南
朱国华
陈轶嵩
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Changan University
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/04—Chucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

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Abstract

The invention discloses a complex loading system for a multi-cell material, which mainly adopts the technical scheme that a plurality of test piece clamping devices are provided with rectangular space structures which are used for installing and fixing test pieces and are matched with the structural sizes of the test pieces, and the rectangular space structures on each test piece clamping device are different in size and are matched with different structural sizes of the test pieces; the loading working condition angle adjusting device comprises an upper loading working condition angle adjusting device and a lower loading working condition angle adjusting device, the upper part of the test piece clamping device is embedded on the upper loading working condition angle adjusting device and is detachably connected with the upper loading working condition angle adjusting device, and the lower part of the test piece clamping device is embedded on the lower loading working condition angle adjusting device; the stress monitoring device is embedded on the lower loading working condition angle adjusting device and is respectively detachably connected with the lower part of the test piece clamping device and the lower loading working condition angle adjusting device; and the data acquisition and analysis device is connected with the stress monitoring device.

Description

一种多胞材料复杂加载系统A complex loading system of cellular materials

技术领域technical field

本发明涉及力学研究技术领域，特别是涉及一种多胞材料复杂加载系统。The invention relates to the technical field of mechanics research, in particular to a complex loading system of multicellular materials.

背景技术Background technique

在多胞材料的力学特性研究中，材料结构在复杂应力状态下的力学行为成为一大研究热点。为了更好的研究材料的力学特性，进行相关复杂应力加载试验验证是必要的。而传统的万能试验机等试验装置对于材料只能进行单向的压缩试验，无法满足复杂应力工况的需求；能够实现复杂加载的试验机，如美国MTS公司制造的平面双轴测试系统，受制于高昂的价格，亦不具备普适性。因此，基于万能试验机的复杂加载系统由此而生。复杂加载系统需要能够对材料结构同时施加至少两个方向的应力，即垂直于加载表面的正应力和平行于加载表面的切应力，且为了适应更多的加载工况，复杂加载系统具备加载角度调节功能，以匹配更多的试验需求。In the study of mechanical properties of cellular materials, the mechanical behavior of material structures under complex stress states has become a major research hotspot. In order to better study the mechanical properties of materials, it is necessary to carry out relevant complex stress loading test verification. However, traditional universal testing machines and other testing devices can only perform unidirectional compression tests on materials, which cannot meet the needs of complex stress conditions; testing machines that can achieve complex loading, such as the plane biaxial testing system manufactured by MTS Corporation in the United States, are subject to Due to the high price, it is not universal. Therefore, a complex loading system based on a universal testing machine was born. The complex loading system needs to be able to apply stress in at least two directions to the material structure at the same time, namely the normal stress perpendicular to the loading surface and the shear stress parallel to the loading surface, and in order to adapt to more loading conditions, the complex loading system has a loading angle Adjust the function to match more experimental needs.

现有技术的复杂加载系统将试件胶粘在两个带有螺孔的垫块上，通过螺栓将垫块与两块半圆形中间的凹槽连接，在半圆形板边缘上每隔10°开有一个孔，通过螺栓连接上下两个与试验机相连的工装爪，以此实现不同角度的试验需求，试验数据的采集则由试验机上安装的传感器完成。The complex loading system of the prior art glues the specimen on two spacers with screw holes, and connects the spacer with the groove in the middle of the two semicircles by bolts. There is a hole at 10°, and the upper and lower tooling claws connected to the testing machine are connected by bolts, so as to realize the test requirements of different angles, and the collection of test data is completed by the sensors installed on the testing machine.

但是现有技术的复杂加载系统有如下三点不足：However, the complex loading system in the prior art has the following three deficiencies:

1.试件与装置采用胶粘连接，胶粘过程中胶层的厚度需要得到控制。胶层太薄，可能导致试验过程中胶粘不牢从而影响试验的完成；胶层太厚将会影响试验结果的精度，同时由于上下胶层厚度不一致，会导致试件的初始位置未能处于系统的中央，无法实现变角度的要求，不利于试验的开展。2.系统的数据采集由试验机上的传感器完成，而复杂加载需要至少两个方向的数据，因此对试验机的传感器提出了一定要求，当试验机的传感器无法同时测量两个方向的数据时，通过乘以角度的三角函数值换算得来的试验数据必然存在较大的误差，不利于研究验证的进行。3.系统中间凹槽的尺寸限制了试件的尺寸。系统只能对与垫块尺寸相差不大的试件进行试验，对试件的普适性较低。因此现有技术的复杂加载系统不能满足本领域技术人员的需求。1. The test piece and the device are connected by gluing, and the thickness of the glue layer needs to be controlled during the gluing process. If the adhesive layer is too thin, it may lead to poor adhesion during the test, which will affect the completion of the test; if the adhesive layer is too thick, it will affect the accuracy of the test results. The center of the system cannot achieve the requirement of changing the angle, which is not conducive to the development of the test. 2. The data collection of the system is completed by the sensors on the testing machine, and complex loading requires data in at least two directions, so certain requirements are put forward for the sensors of the testing machine. When the sensors of the testing machine cannot measure data in two directions at the same time, The experimental data converted by multiplying the trigonometric function value of the angle must have a large error, which is not conducive to the research and verification. 3. The size of the groove in the middle of the system limits the size of the specimen. The system can only test specimens whose size is not much different from the size of the spacer, and the universality of the specimen is low. Therefore, the complex loading systems of the prior art cannot meet the needs of those skilled in the art.

发明内容SUMMARY OF THE INVENTION

有鉴于此，本发明提供一种多胞材料复杂加载系统，主要目的在于提供一种对多胞材料的多种工况下的复杂加载，并且不依赖于万能试验机上的传感器水平，可以自行完成多轴数据采集工作的多胞材料复杂加载系统。In view of this, the present invention provides a complex loading system for multicellular materials, the main purpose of which is to provide a complex loading system for multicellular materials under various working conditions, which can be completed by itself without depending on the sensor level on the universal testing machine. A complex loading system for cellular materials that works with multi-axis data acquisition.

为达到上述目的，本发明主要提供如下技术方案：To achieve the above object, the present invention mainly provides the following technical solutions:

本发明的实施例提供一种多胞材料复杂加载系统。其包括：Embodiments of the present invention provide a complex loading system for cellular materials. It includes:

多个试件装夹装置，所述试件装夹装置上设置有用于安装固定所述试件并与所述试件结构尺寸相匹配的矩形空间结构，每一个所述试件装夹装置上的矩形空间结构的尺寸均不同并与不同的所述试件结构尺寸相匹配；A plurality of specimen clamping devices, the specimen clamping devices are provided with a rectangular space structure for installing and fixing the specimen and matching the structural size of the specimen, and each specimen clamping device is provided with a rectangular space structure. The dimensions of the rectangular space structures are all different and match with the different structural dimensions of the specimen;

加载工况角度调节装置，其包括上部加载工况角度调节装置和下部加载工况角度调节装置，所述试件装夹装置的上部镶嵌在所述上部加载工况角度调节装置上并与所述上部加载工况角度调节装置可拆卸连接，所述试件装夹装置的下部镶嵌在所述下部加载工况角度调节装置上；所述上部加载工况角度调节装置和下部加载工况角度调节装置在垂直方向上的角度调节范围均为-50°-50°；A loading condition angle adjustment device, which includes an upper loading condition angle adjustment device and a lower loading condition angle adjustment device, and the upper part of the specimen clamping device is embedded on the upper loading condition angle adjustment device and is connected with the upper loading condition angle adjustment device. The upper loading condition angle adjustment device is detachably connected, and the lower part of the specimen clamping device is embedded on the lower loading condition angle adjustment device; the upper loading condition angle adjustment device and the lower loading condition angle adjustment device The angle adjustment range in the vertical direction is -50°-50°;

应力监测装置，其镶嵌在所述下部加载工况角度调节装置上并分别与所述试件装夹装置的下部和所述下部加载工况角度调节装置可拆卸连接，所述应力监测装置位于所述试件装夹装置和所述下部加载工况角度调节装置之间；所述应力监测装置用于实时采集所述试件轴向与切向两个方向的应力数据并将采集到的所述应力数据发送给数据采集装置；A stress monitoring device is embedded on the lower loading condition angle adjustment device and is detachably connected to the lower part of the specimen clamping device and the lower loading condition angle adjustment device, and the stress monitoring device is located at the between the specimen clamping device and the lower loading condition angle adjustment device; the stress monitoring device is used to collect the stress data in the axial and tangential directions of the specimen in real time, and the collected The stress data is sent to the data acquisition device;

数据采集分析装置，其与所述应力监测装置连接并用于接收所述应力数据和对所述应力数据进行试验分析。A data acquisition and analysis device is connected to the stress monitoring device and used for receiving the stress data and performing experimental analysis on the stress data.

如前所述的，所述试件装夹装置包括具有第一矩形凹槽的上部垫块和具有第二矩形凹槽的下部垫块，所述上部垫块与所述下部垫块对接使所述第一矩形凹槽和所述第二矩形凹槽组成与所述试件结构尺寸相匹配的矩形空间结构；As mentioned above, the specimen clamping device includes an upper block with a first rectangular groove and a lower block with a second rectangular groove, and the upper block is connected to the lower block so that all The first rectangular groove and the second rectangular groove form a rectangular space structure matching the structural size of the test piece;

所述上部垫块镶嵌在所述上部加载工况角度调节装置上并与所述上部加载工况角度调节装置可拆卸连接；the upper cushion block is embedded on the upper loading condition angle adjustment device and is detachably connected with the upper loading condition angle adjustment device;

所述下部垫块镶嵌在所述下部加载工况角度调节装置上并与所述应力监测装置可拆卸连接。The lower block is embedded on the lower loading condition angle adjustment device and is detachably connected with the stress monitoring device.

如前所述的，所述下部垫块的尺寸与所述应力监测装置上部的尺寸一致。As mentioned above, the size of the lower block is consistent with the size of the upper portion of the stress monitoring device.

如前所述的，所述上部加载工况角度调节装置包括与所述上部垫块可拆卸连接的上部半圆盘和可在垂直方向的-50°-50°角度中以任意一个角度与所述上部半圆盘可拆卸连接的上爪。As mentioned above, the upper loading condition angle adjustment device includes an upper semi-circle detachably connected to the upper spacer block, and the upper half-disk that can be detachably connected to any angle between -50°-50° in the vertical direction. The upper claws of the upper half disc are detachably connected.

如前所述的，所述上部半圆盘的圆盘边缘按照每10°的间隔设置有多个第一通孔，所述上爪通过任意三个所述第一通孔在垂直方向的-50°-50°角度中以任意一个角度与所述上部半圆盘可拆卸连接。As mentioned above, the disc edge of the upper half disc is provided with a plurality of first through holes at intervals of every 10°, and the upper claws pass through any three of the first through holes in the vertical direction - It is detachably connected to the upper half disc at any angle from 50° to 50°.

如前所述的，所述下部加载工况角度调节装置包括与所述应力监测装置可拆卸连接的下部半圆盘和可在垂直方向上的-50°-50°角度中以任意一个角度与所述下部半圆盘可拆卸连接的下爪。As mentioned above, the lower loading condition angle adjustment device includes a lower half-disk detachably connected to the stress monitoring device, and can be connected to the lower half-disk at any angle from -50° to 50° in the vertical direction. The lower half disc is detachably connected to the lower jaw.

如前所述的，所述下部半圆盘的圆盘边缘按照每10°的间隔设置有多个第二通孔，所述下爪通过任意三个所述第二通孔在垂直方向上的-50°-50°角度中以任意一个角度与所述下部半圆盘可拆卸连接。As mentioned above, the disc edge of the lower half disc is provided with a plurality of second through holes at intervals of every 10°, and the lower claws pass through any three of the second through holes in the vertical direction. It is detachably connected to the lower half disc at any angle from -50° to 50°.

如前所述的，所述应力监测装置为三向力传感器。As mentioned above, the stress monitoring device is a three-way force sensor.

如前所述的，所述数据采集分析装置包括与所述应力监测装置连接的信号放大器，与所述信号放大器连接的数据采集卡和与所述数据采集卡连接的数据采集分析模块。As mentioned above, the data acquisition and analysis device includes a signal amplifier connected to the stress monitoring device, a data acquisition card connected to the signal amplifier, and a data acquisition and analysis module connected to the data acquisition card.

借由上述技术方案，本发明的多胞材料复杂加载系统至少具有下列优点：With the above technical solutions, the complex loading system for multicellular materials of the present invention has at least the following advantages:

本发明的多胞材料复杂加载系统通过设置试件装夹装置，采用非胶粘的连接方式，无需考虑胶层厚度的影响，在试件的安装过程中能够确保试件恒处于系统中央位置，实现变角度的要求，并通过设置应力监测装置实时采集所述试件轴向与切向两个方向的应力数据，能够有效的完成对复杂加载试验多轴数据的采集工作，采集精度较高，不受制于万能试验机本身传感器的限制，可以自行完成多轴数据的采集工作，以及通过设置所述上部垫块与所述下部垫块对接使所述第一矩形凹槽和所述第二矩形凹槽组成与所述试件结构尺寸相匹配的矩形空间结构，对于不同尺寸的试件，可以通过匹配拥有不同凹槽尺寸的上部垫块和下部垫块，完成试验，试件的安装更简便有效，具有较好的普适性。The complex loading system of the multicellular material of the present invention adopts a non-adhesive connection method by setting a test piece clamping device, and does not need to consider the influence of the thickness of the adhesive layer, and can ensure that the test piece is always in the center of the system during the installation process of the test piece. The requirement of changing the angle is realized, and the stress data in the axial and tangential directions of the specimen can be collected in real time by setting the stress monitoring device, which can effectively complete the collection of multi-axis data of the complex loading test, and the collection accuracy is high. Not limited by the sensor of the universal testing machine itself, it can complete the multi-axis data collection work by itself, and make the first rectangular groove and the second rectangular groove by arranging the upper spacer to connect with the lower spacer. The grooves form a rectangular space structure that matches the structural dimensions of the test piece. For test pieces of different sizes, the test can be completed by matching the upper and lower spacers with different groove sizes, and the installation of the test piece is easier. Effective and has good universality.

上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，并可依照说明书的内容予以实施，以下以本发明的较佳实施例并配合附图详细说明如后。The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, and implement it according to the content of the description, the preferred embodiments of the present invention are described in detail below with the accompanying drawings.

附图说明Description of drawings

图1是本发明多胞材料复杂加载系统的结构示意图；Fig. 1 is the structural representation of the complex loading system of the multicellular material of the present invention;

图2是本发明试件装夹装置、加载工况角度调节装置和应力监测装置安装结构示意图一；Fig. 2 is a schematic diagram 1 of the installation structure of the specimen clamping device, the loading condition angle adjustment device and the stress monitoring device of the present invention;

图3是本发明试件装夹装置、加载工况角度调节装置和应力监测装置安装结构示意图二；Fig. 3 is a schematic diagram 2 of the installation structure of the specimen clamping device, the loading condition angle adjustment device and the stress monitoring device of the present invention;

图4是本发明试件装夹装置、加载工况角度调节装置和应力监测装置安装结构剖视结构示意图。4 is a schematic cross-sectional structural diagram of the installation structure of the specimen clamping device, the loading condition angle adjustment device and the stress monitoring device of the present invention.

具体实施方式Detailed ways

为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效,以下结合附图及较佳实施例，对依据本发明申请的具体实施方式、结构、特征及其功效，详细说明如后。In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the following in conjunction with the accompanying drawings and preferred embodiments, the specific embodiments, structures, features and effects of the application according to the present invention are described in detail as follows .

如图1所示，本发明的一个实施例提出的一种多胞材料复杂加载系统，其包括：多个试件装夹装置1、加载工况角度调节装置2、应力监测装置3和数据采集分析装置4。As shown in FIG. 1, an embodiment of the present invention proposes a complex loading system for cellular materials, which includes: a plurality of specimen clamping devices 1, a loading condition angle adjustment device 2, a stress monitoring device 3, and a data acquisition device Analytical device 4.

如图1至图4所示，所述试件装夹装置1上设置有用于安装固定所述试件5并与所述试件5结构尺寸相匹配的矩形空间结构，每一个所述试件装夹装置1上的矩形空间结构的尺寸均不同并与不同的所述试件5结构尺寸相匹配；具体的，所述试件装夹装置1包括具有第一矩形凹槽11的上部垫块12和具有第二矩形凹槽13的下部垫块14，所述上部垫块12与所述下部垫块14对接使所述第一矩形凹槽11和所述第二矩形凹槽3组成与所述试件5结构尺寸相匹配的矩形空间结构。所述加载工况角度调节装置2，其包括上部加载工况角度调节装置21和下部加载工况角度调节装置22，所述试件装夹装置1的上部镶嵌在所述上部加载工况角度调节装置21上并与所述上部加载工况角度调节装置21可拆卸连接，所述试件装夹装置1的下部镶嵌在所述下部加载工况角度调节装置22上；所述上部加载工况角度调节装置21和下部加载工况角度调节装置22在垂直方向上的角度调节范围均为-50°-50°；具体的，所述上部垫块12镶嵌在所述上部加载工况角度调节装置21上并与所述上部加载工况角度调节装置21可拆卸连接，所述下部垫块14镶嵌在所述下部加载工况角度调节装置22上并与所述应力监测装置3可拆卸连接。所述上部加载工况角度调节装置21包括与所述上部垫块12可拆卸连接的上部半圆盘211和可在垂直方向上的-50°-50°角度中以任意一个角度与所述上部半圆盘211可拆卸连接的上爪212。在本发明中，上部垫块14镶嵌在下部半圆盘211上，上部半圆盘211的圆盘边缘按照每10°的间隔设置有多个第一通孔2111，上爪212通过任意三个第一通孔2111在垂直方向上的-50°-50°角度中以任意一个角度与上部半圆盘211可拆卸连接，在本发明中，上部垫块12通过上部垫块螺栓121与上部半圆盘211螺纹连接。所述下部加载工况角度调节装置22包括下部半圆盘221和可在垂直方向上的-50°-50°角度中以任意一个角度与所述下部半圆盘221可拆卸连接的下爪222，下部半圆盘221的圆盘边缘按照每10°的间隔设置有多个第二通孔2211，下爪222通过任意三个第二通孔2211在垂直方向上的-50°-50°角度中以任意一个角度与下部半圆盘221可拆卸连接。所述应力监测装置3，其镶嵌在所述下部加载工况角度调节装置22上并分别与所述试件装夹装置1的下部和所述下部加载工况角度调节装置22可拆卸连接，具体的，所述应力监测装置3镶嵌在所述下部半圆盘221上并与所述下部半圆盘221可拆卸连接，所述下部垫块14镶嵌在所述下部半圆盘221上并与所述应力监测装置3可拆卸连接。所述应力监测装置3用于实时采集所述试件5轴向与切向两个方向的应力数据并将采集到的所述应力数据发送给数据采集装置4；在本发明中，所述应力监测装置3为三向力传感器，下部垫块14的尺寸与三向力传感器上部的尺寸一致，在下部垫块14与三向力传感器保持对齐的状态下下部垫块14、三向力传感器均通过传感器固定螺栓31与下部半圆盘221螺纹连接。在本发明中，上爪212和下爪222均设置有爪盘2121，上爪212的爪盘2121卡在上部半圆盘211上并通过爪盘连接螺栓2122与任意三个第一通孔2111连接使上爪212与上部半圆盘211螺纹连接，下爪222的爪盘2121卡在下部半圆盘221上并通过爪盘连接螺栓2122与任意三个第二通孔2211连接使下爪222与下部半圆盘221螺纹连接。所述数据采集分析装置4，其与所述应力监测装置3连接并用于接收所述应力数据和对所述应力数据进行试验分析。所述数据采集分析装置4包括与所述应力监测装置3连接的信号放大器41，与所述信号放大器41连接的数据采集卡42和与所述数据采集卡42连接的数据采集分析模块43。所述信号放大器41用于将所述应力监测装置3采集到的所述应力数据进行信号放大并发送给所述数据采集卡42，所述数据采集卡42用于接收所述信号放大器41发送的所述应力数据并将所述应力数据发送给所述数据采集分析模块43，所述数据采集分析模块43用于对采集到的所述应力数据进行试验分析研究。As shown in FIG. 1 to FIG. 4 , the test piece clamping device 1 is provided with a rectangular space structure for installing and fixing the test piece 5 and matching the structural size of the test piece 5 . Each of the test pieces The dimensions of the rectangular space structures on the clamping device 1 are all different and match with the different structural dimensions of the specimen 5 ; specifically, the specimen clamping device 1 includes an upper cushion block with a first rectangular groove 11 . 12 and a lower spacer block 14 with a second rectangular groove 13, the upper spacer block 12 is butted with the lower spacer block 14 so that the first rectangular groove 11 and the second rectangular groove 3 are formed with the The rectangular space structure of the test piece 5 matching the structure and size. The loading condition angle adjustment device 2 includes an upper loading condition angle adjustment device 21 and a lower loading condition angle adjustment device 22, and the upper part of the specimen clamping device 1 is embedded in the upper loading condition angle adjustment device The device 21 is detachably connected to the upper loading condition angle adjustment device 21, and the lower part of the specimen clamping device 1 is embedded on the lower loading condition angle adjustment device 22; the upper loading condition angle The angle adjustment range of the adjusting device 21 and the lower loading condition angle adjusting device 22 in the vertical direction is both -50°-50°; specifically, the upper spacer block 12 is embedded in the upper loading condition angle adjusting device 21 It is detachably connected to the upper loading condition angle adjustment device 21 , and the lower block 14 is embedded on the lower loading condition angle adjustment device 22 and is detachably connected to the stress monitoring device 3 . The upper loading condition angle adjustment device 21 includes an upper semi-circle 211 detachably connected to the upper pad 12 and can be connected to the upper part at any angle between -50° and 50° in the vertical direction. The upper claw 212 of the semi-circle 211 is detachably connected. In the present invention, the upper spacer 14 is inlaid on the lower half disc 211 , the disc edge of the upper half disc 211 is provided with a plurality of first through holes 2111 at intervals of every 10°, and the upper claws 212 pass through any three The first through hole 2111 is detachably connected to the upper half disc 211 at any angle from -50° to 50° in the vertical direction. The disc 211 is screwed. The lower loading condition angle adjustment device 22 includes a lower half disc 221 and a lower claw 222 that can be detachably connected to the lower half disc 221 at any angle from -50° to 50° in the vertical direction. , the disc edge of the lower half disc 221 is provided with a plurality of second through holes 2211 at intervals of every 10°, and the lower claw 222 passes through any three second through holes 2211 at an angle of -50°-50° in the vertical direction It can be detachably connected with the lower half disc 221 at any angle. The stress monitoring device 3 is embedded in the lower loading condition angle adjustment device 22 and is detachably connected to the lower part of the specimen clamping device 1 and the lower loading condition angle adjustment device 22 respectively. The stress monitoring device 3 is embedded on the lower half-disk 221 and is detachably connected with the lower half-disk 221, and the lower spacer 14 is embedded on the lower half-disk 221 and is connected to the lower half-disk 221. The stress monitoring device 3 is detachably connected. The stress monitoring device 3 is used to collect the stress data in the axial and tangential directions of the specimen 5 in real time and send the collected stress data to the data acquisition device 4; in the present invention, the stress The monitoring device 3 is a three-way force sensor, and the size of the lower pad 14 is consistent with the size of the upper part of the three-way force sensor. When the lower pad 14 and the three-way force sensor are kept aligned, the lower pad 14 and the three-way force sensor are both. The sensor fixing bolts 31 are screwed to the lower half disc 221 . In the present invention, both the upper claw 212 and the lower claw 222 are provided with claw discs 2121, and the claw discs 2121 of the upper claw 212 are clamped on the upper semi-circular disc 211 and are connected to any three first through holes 2111 through the claw disc connecting bolts 2122 The connection makes the upper claw 212 and the upper half disc 211 threadedly connected, the claw disc 2121 of the lower claw 222 is stuck on the lower half disc 221 and is connected with any three second through holes 2211 through the claw disc connecting bolt 2122, so that the lower claw 222 It is screwed with the lower half disc 221. The data acquisition and analysis device 4 is connected to the stress monitoring device 3 and is used for receiving the stress data and performing experimental analysis on the stress data. The data acquisition and analysis device 4 includes a signal amplifier 41 connected to the stress monitoring device 3 , a data acquisition card 42 connected to the signal amplifier 41 , and a data acquisition and analysis module 43 connected to the data acquisition card 42 . The signal amplifier 41 is used to amplify the signal of the stress data collected by the stress monitoring device 3 and send it to the data acquisition card 42 , and the data acquisition card 42 is used to receive the signal sent by the signal amplifier 41 . The stress data is sent to the data acquisition and analysis module 43, and the data acquisition and analysis module 43 is used to conduct experimental analysis and research on the acquired stress data.

具体工作时，调节上部半圆盘与上爪连接的第一通孔的位置和调节下部半圆盘与下爪连接的第二通孔的位置，在垂直方向上的-50°-50°角度调节试验所需的辅助加载工况角度，完成三向力传感器与信号放大器、数据采集卡和数据采集分析模块的连接，将试件固接在试件装夹装置上，数据采集装置对试件轴向与切向两个方向应力数据进行采集，以此完成对多胞材料复杂加载工况下的试验分析研究。During specific work, adjust the position of the first through hole connecting the upper half-disc and the upper claw and adjust the position of the second through-hole connecting the lower half-disc and the lower claw, at an angle of -50°-50° in the vertical direction Adjust the angle of the auxiliary loading condition required for the test, complete the connection between the three-way force sensor and the signal amplifier, the data acquisition card and the data acquisition and analysis module, and fix the test piece on the test piece clamping device, and the data acquisition device is connected to the test piece. The stress data in the axial and tangential directions are collected to complete the experimental analysis and research of the multicellular material under complex loading conditions.

本发明实施例的多胞材料复杂加载系统通过试件装夹装置，采用非胶粘的连接方式，无需考虑胶层厚度的影响，在试件的安装过程中能够确保试件恒处于系统中央位置，实现变角度的要求，并通过设置应力监测装置实时采集所述试件轴向与切向两个方向的应力数据，能够有效的完成对复杂加载试验多轴数据的采集工作，采集精度较高，不受制于万能试验机本身传感器的限制，可以自行完成多轴数据的采集工作，以及通过设置所述上部垫块与所述下部垫块对接使所述第一矩形凹槽和所述第二矩形凹槽组成与所述试件结构尺寸相匹配的矩形空间结构，对于不同尺寸的试件，可以通过匹配拥有不同凹槽尺寸的上部垫块和下部垫块，完成试验，试件的安装更简便有效，具有较好的普适性。The complex loading system of the multicellular material according to the embodiment of the present invention adopts the non-adhesive connection method through the specimen clamping device, and does not need to consider the influence of the thickness of the adhesive layer, and can ensure that the specimen is always in the central position of the system during the installation process of the specimen , to achieve the requirement of changing the angle, and by setting the stress monitoring device to collect the stress data in the axial and tangential directions of the specimen in real time, it can effectively complete the multi-axis data collection of complex loading tests, and the collection accuracy is high , not limited by the sensor of the universal testing machine itself, it can complete the multi-axis data collection work by itself, and by setting the upper pad to connect with the lower pad, the first rectangular groove and the second The rectangular groove constitutes a rectangular space structure that matches the structural size of the test piece. For test pieces of different sizes, the test can be completed by matching the upper and lower blocks with different groove sizes, and the installation of the test piece is more convenient. It is simple and effective, and has good universality.

以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the present invention. within the scope of the technical solution of the invention.

Claims (9)

1.一种多胞材料复杂加载系统，其特征在于：其包括:1. a multicellular material complex loading system, is characterized in that: it comprises: 多个试件装夹装置，所述试件装夹装置上设置有用于安装固定所述试件并与所述试件结构尺寸相匹配的矩形空间结构，每一个所述试件装夹装置上的矩形空间结构的尺寸均不同并与不同的所述试件结构尺寸相匹配；A plurality of specimen clamping devices, the specimen clamping devices are provided with a rectangular space structure for installing and fixing the specimen and matching the structural size of the specimen, and each specimen clamping device is provided with a rectangular space structure. The dimensions of the rectangular space structures are all different and match with the different structural dimensions of the specimen; 加载工况角度调节装置，其包括上部加载工况角度调节装置和下部加载工况角度调节装置，所述试件装夹装置的上部镶嵌在所述上部加载工况角度调节装置上并与所述上部加载工况角度调节装置可拆卸连接，所述试件装夹装置的下部镶嵌在所述下部加载工况角度调节装置上；所述上部加载工况角度调节装置和下部加载工况角度调节装置在垂直方向上的角度调节范围均为-50°-50°；A loading condition angle adjustment device, which includes an upper loading condition angle adjustment device and a lower loading condition angle adjustment device, and the upper part of the specimen clamping device is embedded on the upper loading condition angle adjustment device and is connected with the upper loading condition angle adjustment device. The upper loading condition angle adjustment device is detachably connected, and the lower part of the specimen clamping device is embedded on the lower loading condition angle adjustment device; the upper loading condition angle adjustment device and the lower loading condition angle adjustment device The angle adjustment range in the vertical direction is -50°-50°; 应力监测装置，其镶嵌在所述下部加载工况角度调节装置上并分别与所述试件装夹装置的下部和所述下部加载工况角度调节装置可拆卸连接；所述应力监测装置用于实时采集所述试件轴向与切向两个方向的应力数据并将采集到的所述应力数据发送给数据采集分析装置；A stress monitoring device, which is embedded in the lower loading condition angle adjustment device and detachably connected with the lower part of the specimen clamping device and the lower loading condition angle adjustment device; the stress monitoring device is used for Collect the stress data in the axial and tangential directions of the specimen in real time, and send the collected stress data to a data collection and analysis device; 数据采集分析装置，其与所述应力监测装置连接并用于接收所述应力数据和对所述应力数据进行试验分析。A data acquisition and analysis device is connected to the stress monitoring device and used for receiving the stress data and performing experimental analysis on the stress data. 2.根据权利要求1所述的多胞材料复杂加载系统，其特征在于，2. The complex loading system for cellular materials according to claim 1, characterized in that: 所述试件装夹装置包括具有第一矩形凹槽的上部垫块和具有第二矩形凹槽的下部垫块，所述上部垫块与所述下部垫块对接使所述第一矩形凹槽和所述第二矩形凹槽组成与所述试件结构尺寸相匹配的矩形空间结构；The specimen clamping device includes an upper block with a first rectangular groove and a lower block with a second rectangular groove, the upper block and the lower block are butted to make the first rectangular groove and the second rectangular groove to form a rectangular space structure matching the structural size of the test piece; 所述上部垫块镶嵌在所述上部加载工况角度调节装置上并与所述上部加载工况角度调节装置可拆卸连接；the upper cushion block is embedded on the upper loading condition angle adjustment device and is detachably connected with the upper loading condition angle adjustment device; 所述下部垫块镶嵌在所述下部加载工况角度调节装置上并与所述应力监测装置可拆卸连接。The lower block is embedded on the lower loading condition angle adjustment device and is detachably connected with the stress monitoring device. 3.根据权利要求2所述的多胞材料复杂加载系统，其特征在于，3. The complex loading system for cellular materials according to claim 2, characterized in that: 所述下部垫块的尺寸与所述应力监测装置上部的尺寸一致。The size of the lower block is consistent with the size of the upper part of the stress monitoring device. 4.根据权利要求2所述的多胞材料复杂加载系统，其特征在于，4. The complex loading system for cellular materials according to claim 2, characterized in that: 所述上部加载工况角度调节装置包括与所述上部垫块可拆卸连接的上部半圆盘和可在垂直方向的-50°-50°角度中以任意一个角度与所述上部半圆盘可拆卸连接的上爪。The upper loading condition angle adjustment device includes an upper half-disk detachably connected to the upper spacer, and can be connected to the upper half-disk at any angle in the vertical direction of -50°-50°. Remove the attached upper jaw. 5.根据权利要求4所述的多胞材料复杂加载系统，其特征在于，5. The complex loading system for cellular materials according to claim 4, characterized in that: 所述上部半圆盘的圆盘边缘按照每10°的间隔设置有多个第一通孔，所述上爪通过任意三个所述第一通孔在垂直方向的-50°-50°角度中以任意一个角度与所述上部半圆盘可拆卸连接。The disc edge of the upper half disc is provided with a plurality of first through holes at intervals of every 10°, and the upper claw passes through any three of the first through holes at an angle of -50°-50° in the vertical direction. It is detachably connected with the upper half disc at any angle. 6.根据权利要求1所述的多胞材料复杂加载系统，其特征在于，6. The complex loading system for multicellular materials according to claim 1, wherein, 所述下部加载工况角度调节装置包括与所述应力监测装置可拆卸连接的下部半圆盘和可在垂直方向上的-50°-50°角度中以任意一个角度与所述下部半圆盘可拆卸连接的下爪。The lower loading condition angle adjustment device includes a lower half-disk detachably connected to the stress monitoring device, and can be connected to the lower half-disk at any angle from -50° to 50° in the vertical direction. Removably attached lower jaw. 7.根据权利要求6所述的多胞材料复杂加载系统，其特征在于，7. The complex loading system for cellular materials according to claim 6, characterized in that: 所述下部半圆盘的圆盘边缘按照每10°的间隔设置有多个第二通孔，所述下爪通过任意三个所述第二通孔在垂直方向上的-50°-50°角度中以任意一个角度与所述下部半圆盘可拆卸连接。The disc edge of the lower half disc is provided with a plurality of second through holes at intervals of every 10°, and the lower claw passes through any three of the second through holes in the vertical direction of -50°-50°. The lower half-disk is detachably connected with the lower half-disk at any angle. 8.根据权利要求1所述的多胞材料复杂加载系统，其特征在于，8. The complex loading system for cellular materials according to claim 1, characterized in that: 所述应力监测装置为三向力传感器。The stress monitoring device is a three-way force sensor. 9.根据权利要求1所述的多胞材料复杂加载系统，其特征在于，9. The complex loading system for cellular materials according to claim 1, characterized in that: 所述数据采集分析装置包括与所述应力监测装置连接的信号放大器，与所述信号放大器连接的数据采集卡和与所述数据采集卡连接的数据采集分析模块。The data acquisition and analysis device includes a signal amplifier connected to the stress monitoring device, a data acquisition card connected to the signal amplifier, and a data acquisition and analysis module connected to the data acquisition card.
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