1987 Fiscal Year Final Research Report Summary
Strength of composite laminated plates with a hole or a bolted joint
| Project/Area Number |
61460077
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Aerospace engineering
|
|---|
| Research Institution | Chuo University (1987-1988)
The University of Tokyo (1986) |
|---|
Principal Investigator |
HIRANO Yoichi Faculty of Science and Engineering Chuo University, 理工学部, 教授 (40013669)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
IYAMA Hisashi Faculty of Engineering, University of Tokyo, 工学部・境界領域研究施設, 助手 (90013698)
|
|---|
| Project Period (FY) |
1986 – 1987
|
| Keywords | Composite materials / Strength / Stress conccntration / Circular holes / ボルト継手 |
|---|
| Research Abstract |
Laminate configurations of some composite plates for practical use can be considered to be quasi-orthotropic. In the present project experiments on tensile strength of laminates with loaded and unloaded circular holes are carried out. The plates are made of carbon fibre reinforced plastics and can be considered to be quasi-isotropic or quasi-orthotropic. The experimental results are compared with the calculated first failure strength. The calculations are made by applying Lekhnitskii's stress expression for orthotropic plates with circular holes and Zhang and Ueng's approximate stress expression for orthotropic plates with pin-loaded holes. The calculated strength is much lower than the experimental one as expected. Some consideration about the discrepancy is given. Finite element method will be used in near future to get more informations on stress distributions.
|
Research Products
(6 results)
