JP5827778B2 - 非線形構造用荷重伝達解析装置 - Google Patents
非線形構造用荷重伝達解析装置 Download PDFInfo
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- JP5827778B2 JP5827778B2 JP2011141364A JP2011141364A JP5827778B2 JP 5827778 B2 JP5827778 B2 JP 5827778B2 JP 2011141364 A JP2011141364 A JP 2011141364A JP 2011141364 A JP2011141364 A JP 2011141364A JP 5827778 B2 JP5827778 B2 JP 5827778B2
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Description
(a)材料が完全な線形弾性体であること
(b)変形が微小であって変形前での釣合方程式を使うこと
(c)接触問題を含まないこと
ところが、自動車の衝突においては、以下のように、これらの線形性を一般に有していない。
(a)線形弾性範囲に留まらず、塑性変形する
(b)変形が大きく、非線形大変形問題となる
(c)変形につれて部品同士が接触する非線形性を有する
そのため、自動車の衝突あるいはその他の構造物に関しても、衝撃により大きく変形する構造物には剛性指標U*/U**は使用できない。
2 衝突変形計算手段
3 荷重条件設定手段
4 剛性指標計算手段
5 剛性指標記憶手段
6 荷重伝達算出手段
7 荷重伝達出力手段
Claims (2)
- 解析対象構造物における線形弾性変形が支配的な部分を完全な線形弾性体に置き換える置換手段と、前記置換手段による置換後の解析対象構造物の衝突変形を計算する衝突変形計算手段と、前記衝突変形計算手段で得た線形弾性体部分の変形データから線形弾性体部分における荷重データを求める荷重条件設定手段と、前記荷重条件設定手段で得た荷重データと線形弾性体部分の剛性行列に基づいて有限要素法により線形弾性体部分の変形を計算することによりU*やU**などの剛性指標を求める剛性指標計算手段とを具備することを特徴とする非線形構造用荷重伝達解析装置。
- 解析対象構造物における線形弾性変形が支配的な部分を置換手段で完全な線形弾性体に置き換え、置換後の解析対象構造物の衝突変形を衝突変形計算手段で計算し、線形弾性体部分の変形データから線形弾性体部分における荷重データを荷重条件設定手段で求め、線形弾性体部分の剛性行列に基づいて有限要素法により線形弾性体部分の変形を剛性指標計算手段で計算することによりU*やU**などの剛性指標を求めることを特徴とする非線形構造用荷重伝達解析方法。
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JP5827778B2 true JP5827778B2 (ja) | 2015-12-02 |
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CN103793564B (zh) * | 2014-01-24 | 2016-08-17 | 中国北方车辆研究所 | 一种齿轮传动箱的系统变形计算方法 |
CN104765908B (zh) * | 2015-03-12 | 2018-04-06 | 中车青岛四方机车车辆股份有限公司 | 高速动车组车体局部结构失稳有限元仿真装置及其方法 |
JP6288469B2 (ja) * | 2015-05-21 | 2018-03-07 | Jfeスチール株式会社 | 自動車用開閉部品のパネル反転予測方法およびその方法を用いてパネル反転対策された自動車用開閉部品 |
CN107967370A (zh) * | 2016-10-19 | 2018-04-27 | 华晨汽车集团控股有限公司 | 基于cae仿真技术扩展偏置碰撞力传递路径的方法 |
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JP3493178B2 (ja) * | 2000-12-25 | 2004-02-03 | 日本海エル・エヌ・ジー株式会社 | 耐震補強構造の設計方法、記憶媒体 |
US7027048B2 (en) * | 2002-05-31 | 2006-04-11 | Ugs Corp. | Computerized deformation analyzer |
US8239180B2 (en) * | 2005-11-07 | 2012-08-07 | Keio University | Numerical structural analysis system based on the load-transfer-path method |
US8352219B2 (en) * | 2007-02-28 | 2013-01-08 | Keio University | Numerical structure-analysis calculation system |
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