Design and Implementation of Static Verification Tests for Additively Manufactured Civil Aircraft Components
In order to meet the requirements of CCAR-25-R4 airworthiness certification for civil aircraft components of structural topology optimization using additive manufacturing, a static verification scheme was established based on the actual working conditions for the gooseneck chain on the civil aircraf...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Chinese |
| Published: |
Harbin University of Science and Technology Publications
2022-10-01
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| Series: | Journal of Harbin University of Science and Technology |
| Subjects: | |
| Online Access: | https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=2140 |
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| Summary: | In order to meet the requirements of CCAR-25-R4 airworthiness certification for civil aircraft components of structural topology optimization using additive manufacturing, a static verification scheme was established based on the actual working conditions for the gooseneck chain on the civil aircraft structure, which ensured the accuracy and reliability of the test data and provided a reliability data basis for the establishment of the analysis/calculation MC2 method; the maximum principal strain was selected as the parameter for comparing the test data with the finite element analysis results. The results show that the error between the finite element analysis results and the mean value of the test data for different titanium alloy material properties is less than 10%, and without obtaining accurate material properties of the titanium alloy for additive manufacturing, the results of the finite element analysis using isotropic, elastic modulus E =110 GPa and Poisson′s ratio ν = 0.33 showed minimal deviation from the experimental data. This provides a reference for the design of other static verification test solution for small civil aircraft components manufactured with additive manufacturing of air-worthiness certification. |
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| ISSN: | 1007-2683 |