The MST14 ultra static rigid frame node displacement and internal force testing experimental device is a specialized equipment used in structural mechanics experiments to study the deformation characteristics and internal force distribution of planar rigid frame structures under load.
The device consists of a backplate equipped with an aluminum portal structure, on which there are 8 strain gauges distributed, of which 4 are evenly distributed on the crossbeam and the other 4 are located on the two vertical beams of the portal. Four displacement sensors are used to measure the lateral displacement and rotation angle of the portal node. The testing experimental device is equipped with a static strain acquisition instrument, and the strain at each position is collected through the static strain acquisition instrument. The core of this device lies in accurately measuringtherotationangleandhorizontaldisplacementofrigidnodes, and verifying the calculation results of displacement method and torque distribution method.
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Experimental feature
1.Measure the displacement of the rigid node:
①Horizontal lateral displacement: Measure the lateral displacement of a rigid frame under horizontal loads, asymmetric vertical loads, or couple forces. This is the most significant feature that distinguishes rigid frames from continuous beams.
Node corner: Measure the corner at the intersection of beams and columns. At the rigid node, the beam end angle is equal to the column end angle, which is one of the basic assumptions of the displacement method
2.Measure the internal force at the end of the rod:
①Measure the bending moment, shear force, and axial force of the column base, column top, and beam end through strain gauges or force sensors.
Draw the bending moment diagram, shear force diagram, and axial diagram of the rigid frame.
3Verify the typical equation of displacement method:
①Verify the relationship between basic unknowns (node angular displacement and linear displacement) and external loads.
Verify the physical meaning of the stiffness coefficient kij (the reaction force generated by a unit displacement)
Product Attributes
|
Product Model |
MST14 |
Product Name |
Experimental device for deformation and internal force testing of statically indeterminate rigid frame |
|
Main Materials |
aluminium |
Dimensions |
≤1000×400×1000mm |
|
Product Weight |
≤30kg |
Operating Environment |
Room temperature, relative humidity ≤ 85% |
|
Input Power Supply |
Single phase three wire, 220V ± 5%, 50Hz/60Hz | ||
|
Required Modules |
None |
Optional Modules |
None |
Case Studies
Integrated Thermal Fluids and Energy Laboratory at Zhejiang University of Technology
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Statically Determinate Beam Section Internal Force Testing Apparatus Delivered to Jining Vocational and Technical College
Self Developed Compression Bar Stability and Stress Testing Apparatus Delivered to Shandong Polytechnic University
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Integrated Thermal Fluids and Energy Laboratory at Zhejiang University of Technology
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MicroNewton delivers self developed MST01 statically determinate beam section internal force testing apparatus to Jining Vocational and Technical College. This structural mechanics teaching equipment physically implements the section method to measure beam shear force and bending moment. It supports superposition principle verification and error analysis, suitable for civil engineering mechanical engineering and bridge related students at vocational and technical education institutions.
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