In-situ local contact pressure measuring method and measuring system for elastic property of material

• Main Authors: FAN ZIJIAN, ZHOU SHIMING, SUN HAITAO, LI JIAWEN, JIANG XUANANG, SHEN ZHIBIN
• Format: Patent
• Language: Chinese; English
• Published: 25.10.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to an in-situ local contact pressure measuring method and system for the elastic property of a material, and the method comprises the steps: carrying out a local contact pressure test on a sample, and respectively obtaining the material and geometric parameters of a pressure head, the pressure applied to the sample by the pressure head, and the press-in depth of the pressure head on the sample; the position point moving distance is generated by an observation position point which has a certain distance with the central axis of the pressure head on the surface of the sample along the direction parallel to the surface of the sample in the deformation process; constructing a first relational expression between the pressure and the press-in depth based on a Hertz contact stress theory; based on a displacement calculation theory of a Bwestern internal space semi-infinite elastomer under the action of concentrated force, constructing a second relational expression of a position point movement