Limit analysis

A new formulation to calculate the shakedown limit load of Kirchhoff plates under stochastic conditions of strength is developed. Direct structural reliability design by chance constrained programming is based on the prescribed failure probabilities, which is an effective approach of stochastic programming if it can be formulated as an equivalent deterministic optimization problem.

4p vibecca 01-10-2024 2 0   Download

In this paper, a computational approach using a combination of the upper bound theorem and the bubbleenhanced quadrilateral finite element (FEM-Qi6) is proposed to evaluate bearing capacity factors of strip footing in cohesive-frictional soil. The new element is built based on the quadrilateral element (Q4) by adding a pair of internal nodes to solve the volumetric locking phenomenon.

13p vifilm 24-09-2024 2 1   Download

This study is to assess the effects of raising speed limits to vehicle operating speeds on rural divided highways in Vietnam. This study examines not only the daytime vehicle speeds as often done in previous research but also the nighttime vehicle speeds.

6p viyoko 24-09-2024 3 1   Download

In globalization, the selection of the specifications for design practices depends on the investment agency. For example, steel truss structures can be designed using various codes, such as AISC 360-16 or EC 3. Although most specifications have recently been written in the limit state design approaches, which codes resulting in reasonable design solutions are rarely investigated.

14p vifaye 20-09-2024 1 1   Download

This paper offers a comprehensive techno-economic analysis of capacitive deionization (CDI) technology, examining its significance in water treatment. The analysis begins with a detailed elucidation of CDI principles, emphasizing its operational framework, and delineating both advantages and limitations.

14p vifaye 20-09-2024 2 1   Download

This paper presents a stable node-based smoothed finite element method (SNS-FEM) based on the upper theorem of limit analysis for stability analysis of a square tunnel in cohesive-frictional soils subjected to surcharge loading.

17p vifaye 20-09-2024 1 1   Download

This paper presents the upper bound limit analysis of a slope in cohesive-frictional soils using the node-based smoothed finite element method (NS-FEM). The soil slope was discretized as triangular elements and modeled as Mohr-Coulomb material with the associated flow rule.

14p vifaye 20-09-2024 3 1   Download

The limits of current micro-scale technology is approaching rapidly. As the technology is going toward nano-scale devices, physical phenomena involved are fundamentally different from micro-scale ones. Principles in classical physics are no longer powerful enough to explicate the phenomena involved in nano-scale devices. At this stage, quantum mechanic sheds some light on those topics which cannot be described by classical physics. The primary focus of this research work is the development of an analysis technique for understanding the behavior of strongly perturbed harmonic oscillators.

165p runthenight07 01-03-2023 6 3   Download

This thesis investigates the SPH capability available in the commercial Finite Element (FE) code LS-DYNA®, for water impact problems. Experiments have been conducted on rigid wedges impacting water, which were then simulated with the SPH method. Although certain limitations were experienced with the experimental results, a positive correlation was observed with the numerical technique, thus establishing SPH as a promising method for crashworthiness design.

176p runthenight07 01-03-2023 8 3   Download

This thesis examines the influence of Selection Performance, Monitoring and Business Assistance Intensity, Resource Allocation, and Professional Management Services on business incubation performance. This study extends current research by investigating an additional construct which examines targeted areas of professional management services including marketing and promotion, strategic management, financial management, and staff and personnel management.

286p runthenight04 02-02-2023 8 2   Download

This research is comprised of three interrelated stages of a broader study of the climate change-related corporate governance disclosure practices of Australian companies. The first stage of the study investigates the climate change-related corporate governance disclosure practices of five major Australian energy-intensive companies over a 16-year period (from 1992 to 2007). The five companies are BHP Billiton, Caltex, Origin Energy, Rio Tinto and Santos Limited.

240p runthenight04 02-02-2023 8 2   Download

The design of solar cars has historically been dominated by highly technical and performance-based criteria. This has limited the general acceptance of solar cars as a viable mode of transport in both the public eye and the automotive industry.

189p runthenight04 02-02-2023 6 3   Download

New evidence from clinical and fundamental researches suggests that SNHG7 is involved in the occurrence and development of carcinomas. And the increased levels of SNHG7 are associated with poor prognosis in various kinds of tumors. However, the small sample size was the limitation for the prognostic value of SNHG7 in clinical application.

13p vielonmusk 21-01-2022 17 1   Download

The numerical wedge splitting tests show that in the case of brittle materials, the lower post-failure stress limit defined in the concrete damaged plasticity model resulted in energy consumption for crack propagation exceeding the defined fracture energy (114% higher in the case of a brittleness number of 4.4).

9p guernsey 28-12-2021 12 0   Download

Objectives of the thesis: The literature review on the behaviours of composite beams shows that Ritz method is efficient to analyse the behaviours of composite beams with various boundary conditions, however, the number of researches used this method is still limited.

203p monsterhunterer 20-06-2021 7 2   Download

Water and nitrogen are two primary limiting factors for wheat yield. In consonance with this, field experiment was conducted at Norman Ernest Borlaug Crop Research Centre in Pantnagar (Uttarakhand) during Rabi season of 2017-18 to analyze the performance of CSM-CROPSIM-CERES-wheat model for wheat cultivar...

8p chauchaungayxua11 23-03-2021 13 4   Download

Luận án này hướng đến việc phát triển một phương pháp số mạnh để giải quyết các bài toán kỹ thuật, và phương pháp phân tích trực tiếp được sử dụng. Phương pháp này yêu cầu một thuật toán tối ưu hiệu quả và một công cụ rời rạc thích hợp. Mời các bạn cùng tham khảo.

174p capheviahe28 01-03-2021 12 3   Download

In this research, the isogeometric finite element method is used to discretise the displacement domain of strutures in the first step. The primal-dual algorithm based upon the von Mises yield criterion and a Newton-like iteration is used in the second step to solve optimization problem.

157p capheviahe28 01-03-2021 7 2   Download

Based on theoretical analysis and situation of changing socialist production relations in Vietnam, the thesis contributes to recommend a number of major directions and solutions to promote positive changes, to limit the negative changes of socialist production relations in order to promote production development.

27p quenchua10 18-01-2021 25 4   Download

Analysis of the current social welfare situation for employees in enterprises in Quang Yen commune, Quang Ninh province. On that basis, analyze the results achieved, the limitations and the causes of the limitations to propose solutions to enhance the welfare system for employees in the study area.

31p trinhthamhodang1217 14-01-2021 13 3   Download