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Development of Rigid Body Coupled Spring discrete model for simulation of cementitious composites and structural elements
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| Title: | Development of Rigid Body Coupled Spring discrete model for simulation of cementitious composites and structural elements |
| Other Titles: | セメント系複合材料および構造要素のシミュレーションのための剛体-バネ連成離散モデルの開発 |
| Authors: | Saeid Mehrpay Moghaddam Browse this author |
| Issue Date: | 25-Mar-2020 |
| Publisher: | Hokkaido University |
| Abstract: | A new element based on the concept of Rigid Body Spring Model (RBSM) that inherently incorporates Poisson effect is developed and utilized to simulate nonlinear behaviour of concrete.
Nonlinear material models are implemented based on the meso-scale modelling technique and do not have the complexity of macroscopic models based on volumetric and deviatoric stress and strain tensors separation. Beside the capability of representing the Poisson’s ratio of the material, with the new material models implemented, the new element can represent the compressive, tensile and shear behaviour of concrete as well as provide the principal stresses in the model.
With further development of the element the capability of simulating fibrous concrete was added to the developed discrete model.
The uniaxial compressive and tensile test beside splitting tensile test on plain concrete specimen were simulated successfully and similar cracking patterns to the experiments were observed in the simulations.
Investigation on the SFRC models performed as uniaxial compression, direct tension, flexural beams tests and direct shear through push-off were conducted to verify the capability of the model.
The new discrete element was also employed into simulation of a prefabricated concrete wall keyed shear connection to show the capabilities of the model beyond material scale.
It was observed that the model could predict the strength of the connection and its failure modes properly for two shear key size.
The new ability to visualize stresses and displacement distribution in the model helped clarifying the behaviour of the model. |
| Conffering University: | 北海道大学 |
| Degree Report Number: | 甲第13999号 |
| Degree Level: | 博士 |
| Degree Discipline: | 工学 |
| Examination Committee Members: | (主査) 准教授 松本 浩嗣, 教授 松本 高志, 教授 佐藤 太裕, 教授 上田 多門（深圳大学） |
| Degree Affiliation: | 工学院（北方圏環境政策工学専攻） |
| Type: | theses (doctoral) |
| URI: | http://hdl.handle.net/2115/78359 |
| Appears in Collections: | 課程博士 (Doctorate by way of Advanced Course) > 工学院(Graduate School of Engineering)
学位論文 (Theses) > 博士 （工学）
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