成果報告書詳細
管理番号20150000000160
タイトル*平成26年度中間年報 水素利用技術研究開発事業 燃料電池自動車及び水素供給インフラの国内規制適正化、国際基準調和・国際標準化に関する研究開発 複合圧力容器蓄圧器の基準整備等に関する研究開発
公開日2015/5/29
報告書年度2014 - 2014
委託先名国立大学法人東京大学
プロジェクト番号P13002
部署名新エネルギー部
和文要約
英文要約Title: Development of Technologies for Hydrogen Utilization.
Development for Adequate Domestic Regulation, International Harmonization in Regulation and International Standard for Fuel Cell Vehicle and Hydrogen Infrastructure.
Development for Design Standard of Composite Accumulator for Hydrogen Station
(FY2013-FY2016) FY2014 Annual Report

Responsibility: The University of Tokyo
 
Objective:
This project is organized for investigation of optimum fatigue strength design both of Type 3 and 4 Carbon Fiber Reinforced Plastic (CFRP) accumulator for hydrogen station. Results of the project will be utilized for adequate domestic regulation from the view point of international harmonization.

Results in 2014 FY:
The research is focused on optimum design on Type 3 accumulator from the viewpoint of A6061 aluminum liner fatigue strength.

1. Design criterion
We conclude that the range of the first principal stress, that is, hoop stress of the liner is decisive from the results of pressurized cycle test using small size Type 3 vessels and simple aluminum liners. In line with this conclusion, we set the optimum design problem so as to find combination of aluminum liner shape including dome part, carbon fiber stiffness and CFRP layers constitution, which minimizes total weight, under constraint of stress range arises in aluminum liner.

2.Software to solve optimum design problem
Aiming at optimum design by means of finite element analyses, we develop pre-processor for finite element modeling, in which complicated CFRP layer stack of high and low angles helical layers is adequately expressed in the manner of layer by layer. The increase of layers thickness along dome surface to boss and end points on the surface are determined by semi-automatic manner. The finite element analysis is curried out to investigate stress state in the aluminum liner for experimental vessel of small size. The vessel is examined in pressure cycle test. The leak area is adequately predicted by the result of stress analysis.

3. Effect of ambient temperature rising
A trial simulation is performed to evaluate stress state change caused by ambient temperature rising. We reveal possibility of local raise of stress in aluminum liner, which yields life time reduction.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る