DYNAMIC COMPRESSIVE BEHAVIOR IN DIFFERENT LOADING DIRECTIONS OF 3D BRAIDED COMPOSITES WITH DIFFERENT BRAIDING ANGLE

Authors

  • ZHENHUA ZHAO JIANGSU PROVINCE KEY LABORATORY OF AEROSPACE POWER SYSTEM, COLLEGE OF ENERGY AND POWER ENGINEERING, NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, NANJING, CHINA
  • LULU LIU JIANGSU PROVINCE KEY LABORATORY OF AEROSPACE POWER SYSTEM, COLLEGE OF ENERGY AND POWER ENGINEERING, NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, NANJING, CHINA
  • WEI CHEN JIANGSU PROVINCE KEY LABORATORY OF AEROSPACE POWER SYSTEM, COLLEGE OF ENERGY AND POWER ENGINEERING, NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, NANJING, CHINA
  • XIONG HUANG JIANGSU PROVINCE KEY LABORATORY OF AEROSPACE POWER SYSTEM, COLLEGE OF ENERGY AND POWER ENGINEERING, NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, NANJING, CHINA

Abstract

DYNAMIC COMPRESSIVE TESTS OF 3D BRAIDED COMPOSITES WITH DIFFERENT BRAIDING ANGLE WERE CARRIED OUT IN THE LONGITUDINAL, TRANSVERSE AND THICKNESS DIRECTIONS RESPECTIVELY USING THE SPLIT HOPKINSON PRESSURE BAR (SHPB). THE RESULTS SHOW THAT THE COMPRESSIVE PROPERTIES PRESENT OBVIOUS STRAIN RATE STRENGTHENING EFFECTS IN ALL DIRECTIONS. THE 20° AND 45° BRAIDED COMPOSITE ARE MOST SENSITIVE TO STRAIN RATES IN THE LONGITUDINAL DIRECTION. THE COMPOSITES PRESENT THE FEATURES OF BRITTLE FAILURE AT HIGH STRAIN RATES, ESPECIALLY IN THE LONGITUDINAL DIRECTION. THE COMPOSITES WITH LARGER BRAIDING ANGLE HAVE WEAKER MECHANICAL PROPERTIES IN THE LONGITUDINAL AND TRANSVERSE DIRECTIONS BUT STRONGER MECHANICAL PROPERTIES IN THE THROUGH-THICKNESS DIRECTION. THE BRAID ANGLE HAS THE GREATEST IMPACT ON THE LONGITUDINAL MECHANICAL PROPERTIES. THE COMPRESSIVE STRESS-STRAIN CURVES IN THE THICKNESS DIRECTION WERE SIMILAR TO THE HYSTERESIS CURVE FOR BOTH THE 30° AND 45° BRAIDED COMPOSITES. THE COMPRESSIVE FAILURE MODES VARY WITH THE LOADING DIRECTIONS AND STRAIN RATE.

Author Biographies

ZHENHUA ZHAO, JIANGSU PROVINCE KEY LABORATORY OF AEROSPACE POWER SYSTEM, COLLEGE OF ENERGY AND POWER ENGINEERING, NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, NANJING, CHINA

DR. ZHAO MAINLY CONDUCT FOD STUDIES ON THE AEROENGINE BLADES AND HIGH VELOCITY IMPACT BEHAVIOR OF COMPOSITES. 

WEI CHEN, JIANGSU PROVINCE KEY LABORATORY OF AEROSPACE POWER SYSTEM, COLLEGE OF ENERGY AND POWER ENGINEERING, NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, NANJING, CHINA

PROF. CHEN IS AN EXPERT ON THE STRUCTURAL STRENGTH AND VIBRATION OF AEROENGINE.  

XIONG HUANG, JIANGSU PROVINCE KEY LABORATORY OF AEROSPACE POWER SYSTEM, COLLEGE OF ENERGY AND POWER ENGINEERING, NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, NANJING, CHINA

MR. HUANG IS A GRADUATE STUDENT WHO CONRIBUTE A LOT TO THE TESTS.

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Published

2018-07-13

Issue

Vol. 15 No. 9 (2018)

Section

Articles

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