This paper presents a detailed study on the fracture behaviors of soft materials with hard inclusion. Stress concentrations on the interfaces of hard and soft materials are considered as the key factor for structure fracture. Based on linear fracture theory, the fracture behaviors of soft materials with elliptical hard inclusion are investigated. Stress concentrations, consisting of tensile, hoop, and compressive stress, are observed with changes of inclusion geometries and the modulus ratio of hard and soft materials. And their influences on the categories of principal stress concentration are shown in a phase diagram in the current paper. Finite element analysis is carried out with consideration of the large deformation of soft material, which demonstrates the effectiveness of the theoretical predictions in a great scope of applied loading. Finally, the predictions based on theoretical and simulation results are validated by experiments. This work points out that the hard line inclusion is the source of danger in soft materials just like the crack in brittle materials.
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November 2018
Research-Article
Fracture Analyses of Soft Materials With Hard Inclusion
Pengyu Pei,
Pengyu Pei
State Key Laboratory of Mechanics and
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
Search for other works by this author on:
Yan Shi,
Yan Shi
State Key Laboratory of Mechanics and
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
e-mail: yshi@nuaa.edu.cn
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
e-mail: yshi@nuaa.edu.cn
Search for other works by this author on:
Guang Yang,
Guang Yang
State Key Laboratory of Mechanics and
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
Search for other works by this author on:
Cunfa Gao
Cunfa Gao
State Key Laboratory of Mechanics and
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
e-mail: cfgao@nuaa.edu.cn
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
e-mail: cfgao@nuaa.edu.cn
Search for other works by this author on:
Pengyu Pei
State Key Laboratory of Mechanics and
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
Yan Shi
State Key Laboratory of Mechanics and
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
e-mail: yshi@nuaa.edu.cn
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
e-mail: yshi@nuaa.edu.cn
Guang Yang
State Key Laboratory of Mechanics and
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
Cunfa Gao
State Key Laboratory of Mechanics and
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
e-mail: cfgao@nuaa.edu.cn
Control of Mechanical Structures,
Nanjing University of
Aeronautics & Astronautics,
Nanjing 210016, China
e-mail: cfgao@nuaa.edu.cn
1P. Pei and Y. Shi contributed equally to this work.
2Corresponding authors.
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received May 27, 2018; final manuscript received June 24, 2018; published online July 17, 2018. Editor: Yonggang Huang.
J. Appl. Mech. Nov 2018, 85(11): 111003 (9 pages)
Published Online: July 17, 2018
Article history
Received:
May 27, 2018
Revised:
June 24, 2018
Citation
Pei, P., Shi, Y., Yang, G., and Gao, C. (July 17, 2018). "Fracture Analyses of Soft Materials With Hard Inclusion." ASME. J. Appl. Mech. November 2018; 85(11): 111003. https://doi.org/10.1115/1.4040694
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