低炭素フットプリント材料を用いた車両構造の設計
Designing vehicle structures using materials with a low carbon footprint (原題)
Bartosz ŁATA, Jacek Andrzej Czarnigowski, Wiktor ISKRA, Miłosz CHWIEJCZAK, Iga KOPEĆ
🤖 gxceed AI 要約
日本語
Shell Eco-marathon向け試作車のモノコック構造を対象に、CFRPと亜麻繊維バイオコンポジットの静的FEM解析を比較した。1:1置換では最大変形が約2.6倍に増大し剛性不足となるが、亜麻繊維層を増やし板厚を30%増すことで安全基準（変形1mm未満）を満たす。質量は91%増加するものの、天然由来の持続可能材料でも設計最適化次第で荷重支持構造に適用可能と示した。
English
Static FEM simulations compared a CFRP versus flax-fibre biocomposite monocoque for a Shell Eco-marathon prototype vehicle. A 1:1 material substitution raised maximum deformation ~2.6-fold, failing stiffness criteria; adding flax layers (30% thicker laminate) restored safe deflection (<1 mm) at a 91% mass penalty. Sustainable natural-fibre composites can serve as load-bearing vehicle structures if lower specific stiffness is offset during wall-thickness optimisation.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
自動車の軽量化・素材転換はScope 3やLCA削減の実務課題であり、日本メーカーのカーボンニュートラル戦略に資する。ただし開示制度や政策との直接接続はなく、SSBJ・有報対応への示唆は限定的。
In the global GX context
Material substitution and lightweighting feed into Scope 3 and product-LCA decarbonisation, relevant to automotive transition finance and CSRD product-level disclosure. However, it offers no direct disclosure-framework or policy contribution.
👥 読者別の含意
🔬研究者:天然繊維複合材の剛性補償設計に関する定量的ベンチマークを提供する。
🏢実務担当者:軽量バイオ素材採用時の板厚・質量トレードオフを設計段階で見積もる参考になる。
📄 Abstract（原文）
The development of modern automotive structures is currently focused on energy optimisation to minimise their negative environmental impact. One of the key trends in this field is the implementation of renewable materials and composites reinforced with natural fibres. This article presents the results of static finite element method (FEM) simulations conducted on a newly designed self-supporting monocoque structure of a prototype vehicle developed for the international Shell Eco-marathon competition. The numerical analysis, carried out using Ansys Mechanical, compares the structural response of the chassis when configured with conventional carbon fibre-reinforced polymer (CFRP) versus a flax-fibre-based biocomposite. The numerical models were defined using orthotropic mechanical parameters determined by the authors through prior experimental testing. The structural analysis under the nominal driver weight demonstrated that a direct 1:1 material substitution results in a drastic, nearly 2.6-fold increase in maximum deformation, thereby disqualifying the structure on the basis of structural stiffness. It was shown that to maintain the monocoque's deflection at a consistent, safe level (below 1 mm), it is necessary to increase the number of flax fibre layers. This modification increases the laminate thickness by 30%, leading to a nearly twofold (91%) increase in the mass of the monocoque itself. The research demonstrated that sustainable materials of natural origin can be used to design a fully compliant and safe load-bearing vehicle structure, provided that their lower specific stiffness is compensated for during the wall-thickness optimisation stage.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.35784/acs_10105first seen 2026-10-02 04:49:05
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