Numerical simulation of contraction and expansion flows of fiber suspensions

1994 ◽  
Vol 38 (3) ◽  
pp. 753-753
Author(s):  
Kazunori Yasuda ◽  
Kiyoji Nakamura ◽  
Noriyasu Mori
Keyword(s):  
Numerical Simulation ◽  
Fiber Suspensions ◽  
Contraction And Expansion

scholarly journals Numerical Simulation of Contraction and Expansion Flows of Fiber Suspensions

1993 ◽  
Vol 21 (2) ◽  
pp. 103-109
Author(s):  
Kazunori YASUDA ◽  
Kiyoji NAKAMURA ◽  
Noriyasu MORI
Keyword(s):  
Numerical Simulation ◽  
Fiber Suspensions ◽  
Contraction And Expansion

scholarly journals Study on Mechanics-Based Cracking Resistance of Semiflexible Pavement Materials

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Duanyi Wang ◽  
Xiayi Liang ◽  
Danning Li ◽  
Hehao Liang ◽  
Huayang Yu
Keyword(s):  
Numerical Simulation ◽  
Internal Stress ◽  
Cement Mortar ◽  
Material Design ◽  
Air Voids ◽  
Pavement Materials ◽  
Indirect Tensile ◽  
Optimal Material ◽  
Air Void ◽  
Contraction And Expansion

Semiflexible mixture is a composite paving material combining the advantages of both asphalt and cement concrete materials. It consists of matrix asphalt skeleton and cement mortar. Due to the different volume characters between asphalt structure and cement mortar, stress concentration always happens in this semiflexible mixture, leading to internal cracking. The objective of this study is to alleviate the internal cracking concern of the semiflexible mixture by adjusting the material components. To this end, optimal material design and numerical simulation have been conducted. Matrix asphalt structures with four different air voids were incorporated with different dosages of cement mortar. The contraction strain and expansion strain of cement mortar as well as the indirect tensile strength of matrix asphalt structure were measured. The results were input into ABAQUS for numerical simulation. The results indicated that (1) the internal stress in this semiflexible mixture is mainly determined by the contraction of cement mortar, rather than expansion; (2) larger air void of matrix asphalt structure and less volumetric variation of cement mortar reduce the internal stress; (3) once the air void of matrix asphalt structure is decided, both maximum contraction and expansion deformations of cement mortar should meet specific requirement to ensure less internal cracking. This is a practical-ready paper that provides reference for the anticracking design of semiflexible pavement.

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