JP2019106175A - Bpm理論に基づくメゾの力チェーン粒子モデルの構築方法 - Google Patents
Bpm理論に基づくメゾの力チェーン粒子モデルの構築方法 Download PDFInfo
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Abstract
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本発明は、以下の有益な効果を有する。
Claims (3)
- BPM理論に基づくメゾの力チェーン粒子モデルの構築方法であって、
物体の幾何モデルを空間で格子分割を行って、それぞれの格子中心の三次元座標を取得するステップ1と、
得られた座標情報を使用して格子の数量に応じて相応数の剛性基礎粒子ユニットを生成し、かつ粒子に固有属性を付与するステップ2と、
BPM理論によりそれぞれの剛性基礎粒子を結合し、相隣する粒子間が結合キーを形成し、かつ結合キーに一定の力学特性を付与し、その力学関係は、
外力の作用に伴って、結合キーが時間ステップごとに発生した相応の弾性力及び力のモーメント増分は、
平行キーに作用する最大引張応力及びせん断応力が、
最大引張応力が引張強度を超え、即ち、
であり、或いは最大せん断応力がせん断強度を超え、即ち
であると、平行キーには破裂が生じて失効するステップ3と、
構成した結合モデルに外力を印加し、力が結合キーに沿って内部へ伝達し、上記公式に基いて結合粒子モデルを結び合わせて判断し、結合粒子モデルが外力の作用を受けたとき、力が結合キーに沿ってモデルの内部へ伝達し、形成した伝達経路が力チェーンと称され、力チェーンが強と弱に分けることができると共に、力が内部に伝達する過程において一定の伝達規律を表現するステップ4とを含むことを特徴とするBPM理論に基づくメゾの力チェーン粒子モデルの構築方法。
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CN111914321A (zh) * | 2020-06-09 | 2020-11-10 | 西安理工大学 | 一种堆石混凝土三相细观模型的建立方法 |
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CN116362096B (zh) * | 2023-03-10 | 2023-11-10 | 同济大学 | 一种颗粒力链动力失效侦测方法 |
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Cited By (6)
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CN111259593A (zh) * | 2020-02-10 | 2020-06-09 | 江西理工大学 | 基于edem实现岩石破碎过程可视化的方法 |
CN111259593B (zh) * | 2020-02-10 | 2023-05-23 | 江西理工大学 | 基于edem实现岩石破碎过程可视化的方法 |
CN111914321A (zh) * | 2020-06-09 | 2020-11-10 | 西安理工大学 | 一种堆石混凝土三相细观模型的建立方法 |
CN111914321B (zh) * | 2020-06-09 | 2024-01-16 | 西安理工大学 | 一种堆石混凝土三相细观模型的建立方法 |
CN114216820A (zh) * | 2021-12-13 | 2022-03-22 | 青岛理工大学 | 一种识别三维颗粒体系内部力链的装置及方法 |
CN114216820B (zh) * | 2021-12-13 | 2024-03-19 | 青岛理工大学 | 一种识别三维颗粒体系内部力链的装置及方法 |
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