Results 21 to 30 of about 164,309 (313)

Discrete exterior geometry approach to structure-preserving discretization of distributed-parameter port-Hamiltonian systems [PDF]

, 2011
This paper addresses the issue of structure-preserving discretization of open distributed-parameter systems with Hamiltonian dynamics. Employing the formalism of discrete exterior calculus, we introduce a simplicial Dirac structure as a discrete analogue
Seslija, Marko,, Scherpen, Jacquelien M.A.,, van der Schaft, Abraham, van der Schaft, Abraham; id_orcid, Arjan Van Der Schaft, Jacquelien M. A. Scherpen, van der Schaft, Arjan, Scherpen, Jacquelien M.A., Seslija, Marko, van der Schaft, Arjan ; id_orcid, Marko Seslija, Schaft, Arjan van der,   +11 more
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Calibration of Discrete Element Model Parameters of Soil around Tubers during Potato Harvesting Period

Agriculture, 2022
To address the fact that existing studies may not be able to accurately describe the discrete element parameters of the soil during the potato harvesting period and to improve the accuracy of the potato harvesting equipment simulation studies, this study
Yuyao Li, Jiali Fan, Zhichao Hu, Weiwen Luo, Hongguang Yang, Lili Shi, Feng Wu   +6 more
doaj   +1 more source

Identification of numerical model parameters of tunnel lining in non-cohesive soil [PDF]

Biuletyn Wojskowej Akademii Technicznej, 2018
The paper discusses identification of numeric model parameters of tunnel lining in a soil medium according to the discrete element method. An author’s program based on the discrete element method was used. Laboratory tests were conducted to determine the
Paweł Szklennik
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Investigation of a boundary simulation of continuity using the discrete solid element method

Advances in Mechanical Engineering, 2019
The discrete solid element method is an efficient numerical method that simulates the large deformation, strong material nonlinearity, fracture, and dynamic problems of continuity.
Baochen Zhu, Ruoqiang Feng
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Modeling the evolution of natural cliffs subject to weathering. 2, Discrete element approach [PDF]

, 2011
The evolution of slopes subjected to weathering has been modeled by assuming Mohr-Coulomb behavior and by using a numerical approach based on the discrete element method (DEM).
G. B. Crosta, Crosta, Giovanni B., Utili, Stefano, S. Utili   +3 more
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ABOUT SOLUTION OF MULTIPOINT BOUNDARY PROBLEMS OF THREE-DIMENSIONAL STRUCTURAL ANALYSIS WITH THE USE OF COMBINED APPLICATION OF FINITE ELEMENT METHOD AND DISCRETE-CONTINUAL FINITE ELEMENT METHOD. PART 1: FORMULATION AND BASIC PRINCIPLES OF APPROXIMATION

International Journal for Computational Civil and Structural Engineering, 2018
The distinctive paper is devoted to formulation and basic principles of approximation of multipoint boundary problem of static analysis of three-dimensional structure with the use of combined application of finite element method and discrete-continual ...
Pavel A. Akimov, Oleg A. Negrozov
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Hybrid Finite-Discrete Element Modelling of Excavation Damaged Zone Formation Process Induced by Blasts in a Deep Tunnel

Advances in Civil Engineering, 2020
A brief literature review of numerical studies on excavation damage zone (EDZ) is conducted to compare the main numerical methods on EDZ studies. A hybrid finite-discrete element method is then proposed to model the EDZ induced by blasts.
Huaming An, Hongyuan Liu, Haoyu Han
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Three-dimensional discrete element simulation of the runaway vehicle deceleration process on the arrester bed of truck escape ramps

Science Progress, 2020
Due to imperfect design norms and guidelines for China’s truck escape ramp, previous studies have not been able to reflect the effect of wheel subsidence process on the deceleration of runaway vehicles.
Pinpin Qin, Fengmin Wu, Da Wu, Shunfeng Zhang, Daming Huang   +4 more
doaj   +1 more source

Discrete Exterior Calculus [PDF]

, 2003
This thesis presents the beginnings of a theory of discrete exterior calculus (DEC). Our approach is to develop DEC using only discrete combinatorial and geometric operations on a simplicial complex and its geometric dual.
Hirani, Anil Nirmal
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Accelerating Polyhedral Discrete Element Method with CUDA

The Astronomical Journal, 2023
This paper presents an efficient CUDA-based implementation of a nonspherical discrete element method where irregular particles are described by using polyhedrons. Two strategies are employed to exploit the parallelism of the numerical method.
Tongge Wen, Xiangyuan Zeng
doaj   +1 more source