Method for testing tire rubber complex stress condition mechanical performance and its special equipment

• Main Authors: YIN HAISHAN, WEI YINTAO, HU YAOSHENG
• Format: Patent
• Language: Chinese; English
• Published: 07.09.2011
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a set of complete experiment system for estimating the mechanical property of tyre rubber in complex stress state. The experiment system comprises material tests including uniaxial tension test, equal biaxial tension test and planar tension (pure shearing) test, and the data recorded by the tests include CCD images (including time), tension force and a time curve. The experiment system comprises the following steps: adopting a digital image processing program to obtain a relation curve of strain and time; obtaining stress strain curve data through time corresponding relation; and obtaining a stress strain curve after smoothing by means of regression analysis program. The experiment system is suitable for mechanical property test of rubber in complex stress state. The technical proposal can effectively carry out stress-distortion test on a rubber sample under the conditions of single axis, double axis and pure shearing, thereby estimating the mechanical property of tyre rubber in compl