Mechanical Behaviors and Constitutive Relations under wide strain rate range for CMDB propellant
Propellant materials are occasionally experiencing severe dynamic loading during transporting and service process, thus their mechanical characteristics and potential mechanisms under transient loading are needed thoroughly understanding for its integrity designing and reliable service. The paper fo...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941822003270 |
| _version_ | 1811226124902989824 |
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| author | Meng Li Zhihui Li He He Lianyang Chen Yinggang Miao |
| author_facet | Meng Li Zhihui Li He He Lianyang Chen Yinggang Miao |
| author_sort | Meng Li |
| collection | DOAJ |
| description | Propellant materials are occasionally experiencing severe dynamic loading during transporting and service process, thus their mechanical characteristics and potential mechanisms under transient loading are needed thoroughly understanding for its integrity designing and reliable service. The paper focuses on the mechanical behaviors of propellant CMDB, along with its potential mechanism and constitutive characterizations. Mechanical behaviors are firstly studied experimentally under strain rates from 0.0001 s−1 to 3800 s−1 using Instron mechanical device and Hopkinson bar apparatus. Strain-controlled experiments are also performed for specific focus on severe multiple loadings. It is found that CMDB presents high rate-dependence, and shares parallel mechanical behaviors under wide strain rates. So does the strain hardening ratio. The microstructural observation on crack maps demonstrates that the crack is rate-dependent too, which presents the increasing dimension and decreasing quantity with increasing strain rate. The mechanisms are accordingly proposed based on microstructures, which can explain reasonably the rate dependences. Finally, a constitutive equation is succinctly deduced to well capture the mechanic characteristics at large deformation under wide strain rate range, and the involved less parameters own the overwhelming merit in engineering simulation and applications. |
| first_indexed | 2024-04-12T09:20:07Z |
| format | Article |
| id | doaj.art-22db4c2da3a84e379b73c4bc888b9a46 |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-04-12T09:20:07Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-22db4c2da3a84e379b73c4bc888b9a462022-12-22T03:38:41ZengElsevierPolymer Testing0142-94182022-12-01116107806Mechanical Behaviors and Constitutive Relations under wide strain rate range for CMDB propellantMeng Li0Zhihui Li1He He2Lianyang Chen3Yinggang Miao4Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Xi'an, Shaanxi, 710065, ChinaSchool of Mechanical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi, 721016, ChinaShaanxi Key Laboratory of Impact Dynamics and its Engineering Application, School of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Joint International Research Laboratory of Impact Dynamics and its Engineering Applications, School of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, ChinaShaanxi Key Laboratory of Impact Dynamics and its Engineering Application, School of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Joint International Research Laboratory of Impact Dynamics and its Engineering Applications, School of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, ChinaShaanxi Key Laboratory of Impact Dynamics and its Engineering Application, School of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Joint International Research Laboratory of Impact Dynamics and its Engineering Applications, School of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Corresponding author. Shaanxi Key Laboratory of Impact Dynamics and its Engineering Application, School of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.Propellant materials are occasionally experiencing severe dynamic loading during transporting and service process, thus their mechanical characteristics and potential mechanisms under transient loading are needed thoroughly understanding for its integrity designing and reliable service. The paper focuses on the mechanical behaviors of propellant CMDB, along with its potential mechanism and constitutive characterizations. Mechanical behaviors are firstly studied experimentally under strain rates from 0.0001 s−1 to 3800 s−1 using Instron mechanical device and Hopkinson bar apparatus. Strain-controlled experiments are also performed for specific focus on severe multiple loadings. It is found that CMDB presents high rate-dependence, and shares parallel mechanical behaviors under wide strain rates. So does the strain hardening ratio. The microstructural observation on crack maps demonstrates that the crack is rate-dependent too, which presents the increasing dimension and decreasing quantity with increasing strain rate. The mechanisms are accordingly proposed based on microstructures, which can explain reasonably the rate dependences. Finally, a constitutive equation is succinctly deduced to well capture the mechanic characteristics at large deformation under wide strain rate range, and the involved less parameters own the overwhelming merit in engineering simulation and applications.http://www.sciencedirect.com/science/article/pii/S0142941822003270Material testingMechanical behaviorsDamage mechanismStrain ratePropellant |
| spellingShingle | Meng Li Zhihui Li He He Lianyang Chen Yinggang Miao Mechanical Behaviors and Constitutive Relations under wide strain rate range for CMDB propellant Polymer Testing Material testing Mechanical behaviors Damage mechanism Strain rate Propellant |
| title | Mechanical Behaviors and Constitutive Relations under wide strain rate range for CMDB propellant |
| title_full | Mechanical Behaviors and Constitutive Relations under wide strain rate range for CMDB propellant |
| title_fullStr | Mechanical Behaviors and Constitutive Relations under wide strain rate range for CMDB propellant |
| title_full_unstemmed | Mechanical Behaviors and Constitutive Relations under wide strain rate range for CMDB propellant |
| title_short | Mechanical Behaviors and Constitutive Relations under wide strain rate range for CMDB propellant |
| title_sort | mechanical behaviors and constitutive relations under wide strain rate range for cmdb propellant |
| topic | Material testing Mechanical behaviors Damage mechanism Strain rate Propellant |
| url | http://www.sciencedirect.com/science/article/pii/S0142941822003270 |
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