Results 81 to 90 of about 13,910,350 (344)

Development and geometry of isotropic and directional shrinkage crack patterns

, 1999
We have studied shrinkage crack patterns which form when a thin layer of an alumina/water slurry dries. Both isotropic and directional drying were studied.
A. A. Griffiths, A. Groisman, A. H. Lachenbruch, A. T. Skjeltorp, A. Yuse, A. Yuse, C. Allain, E. M. Kindle, G. Müller, I. M. Sokolov, J. M. De Graaf, J. Q. Tompkins, J. Q. Tompkins, J. T. Neal, J. V. Andersen, J. V. Andersen, J. Walker, John R. de Bruyn, K. M. Crosby, K.-t. Leung, Kelly A. Shorlin, L. B. Freund, L. Pauchard, M. P. Ryan, M. P. Ryan, Malcolm Graham, O. Morgenstern, O. Morgenstern, P. Budkewitsch, S. Kitsunezaki, S.-i. Sasa, Stephen W. Morris, T. Hornig, T. S. Komatsu, U. A. Handge, W. Korneta, Y. Hayakawa   +36 more
core   +1 more source

Active Earth Pressure against Rigid Retaining Walls for Finite Soils in Sloping Condition considering Shear Stress and Soil Arching Effect

, 2020
The horizontal differential layer element method was used to study the active earth pressure of the finite-width soil formed by the rigid retaining wall for the embankment or adjacent foundation pits.
Weidong Hu, Kangxing Liu, Xinnian Zhu, Xiaolong Tong, Xiyu Zhou   +4 more
semanticscholar   +1 more source

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

Advanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

Exploration of the impacts of cement sheath on casing stress based on the arching effects of formations

Meitian dizhi yu kantan
ObjectiveWith the growth in the demand for natural oil and gas and the technological progress of their production, the oil and gas well depths have been constantly setting new records.
Fengchen AN, Zhibo MIAO, Siwei MENG, Ziying WEI, Xiao ZHANG, Jiaming ZENG, Xiaohua WANG   +6 more
doaj   +1 more source

Contact forces in regular 3D granular pile

, 1998
We present exact results for the contact forces in a three dimensional static piling of identical, stiff and frictionless spheres. The pile studied is a pyramid of equilateral triangular base (``stack of cannonballs'') with a FCC (face centered cubic ...
Brockbank, Claudin, Edwards, G. Oron, H.J. Herrmann, Hong, Huntley, Liffman, Liffman, Luding, Wittmer   +10 more
core   +1 more source

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert, Matheus Roberto Bellé, Anton Yehorov, Anhelina Mospan, Till M. J. Stadtmüller, Seetharaman Sridhar, Christos G. Aneziris, Olena Volkova   +7 more
wiley   +1 more source

An Orderly Untangling Model against Arching Effect in Emergency Evacuation Based on Equilibrium Partition of Crowd

Discrete Dynamics in Nature and Society, 2017
To untangle the arching effect of a crowd as much as possible in emergency evacuations, we employ a theoretical model of equilibrium partition of crowd batch.
Lianghai Jin, Mingzhang Xiang, Shu Chen, Xiazhong Zheng, Ruojun Yao, Yangao Chen   +5 more
doaj   +1 more source

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

Analytical model of vertical load acting on jacked pipe considering soil arching effect in cohesionless soil

Underground Space
For the project of pipe jacking in cohesionless soil, it is key to determine the vertical load on jacked pipe so as to predict the jacking force accurately.
Yu Zhang, Lianjin Tao, Xu Zhao, Jun Liu, Weizhang Liao, Fei Guo, Xiaohui Yang, Ruiqin Zhong   +7 more
doaj   +1 more source

Numerical investigation into the failure of a micropile retaining wall [PDF]

, 2017
The paper presents a numerical investigation on the failure of a micropile wall that collapsed while excavating the adjacent ground. The main objectives are: to estimate the strength parameters of the ground; to perform a sensitivity analysis on the back
Prat Catalán, Pere
core   +2 more sources