Localized rock failures,like cracks or shear bands,demand specific attention in modeling for solids and *** is due to the uncertainty of conventional continuum-based mechanical models when localized inelastic deformat...
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Localized rock failures,like cracks or shear bands,demand specific attention in modeling for solids and *** is due to the uncertainty of conventional continuum-based mechanical models when localized inelastic deformation has *** such scenarios,as macroscopic inelastic reactions are primarily influenced by deformation and microstructural alterations within the localized area,internal variables that signify these microstructural changes should be established within this ***,localized deformation characteristics of rocks are studied here by the preset angle shear experiment.A method based on shear displacement and shear stress differences is proposed to identify the compaction,yielding,and residual points for enhancing the model's effectiveness and minimizing subjective ***,a mechanical model for the localized shear band is depicted as an elasto-plastic model outlining the stress-displacement relation across both sides of the shear *** damage theory and an elasto-plastic model,a proposed damage model is introduced to replicate shear stressdisplacement responses and localized damage evolution in intact rocks experiencing shear ***,a novel nonlinear mathematical model based on modified logistic growth theory is proposed for depicting the shear band's damage evolution ***,an innovative damage model is proposed to effectively encompass diverse rock material behaviors,including elasticity,plasticity,and softening ***,the effects of the preset angles,temperature,normal stresses and the residual shear strength are carefully *** discovery enhances rock research in the proposed damage model,particularly regarding shear failure mode.
The stability of η-Fe2Al5 phase at α-Fe/molten Zn–0.1Al (wt.%) (L) interface at 723 K in Fe–Zn–Al ternary system was investigated by phase-field simulations. Thin layers of intermetallic compound (IMC) phases (...
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The Orienteering Problem (OP) is a well-studied routing problem that has been extended to incorporate uncertainties, reflecting stochastic or dynamic travel costs, prize-collection costs, and prizes. Existing approach...
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To verify strengths of steel bar-timber composite beam after the 60-minute burning test reported in a previous paper, a method is proposed to estimate temperature profile in uncharred area inside the beam using temper...
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Based on the actual cases, this article mainly elaborates from the following three aspects: the research background, the development status and the achievements of the reform. The author also carefully analyzes the vi...
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Based on the actual cases, this article mainly elaborates from the following three aspects: the research background, the development status and the achievements of the reform. The author also carefully analyzes the viewpoint and train of thought of the visual schema language curriculum system proposed in this paper.
The total thermal resistance of bedding systems can be affected by environmental variables.A computational fluid dynamics(CFD)model of child manikin and duvet bedding system was developed to investigate the effects of...
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The total thermal resistance of bedding systems can be affected by environmental variables.A computational fluid dynamics(CFD)model of child manikin and duvet bedding system was developed to investigate the effects of air temperature(T_(air),5–25°C)and air velocity(V_(air),0.2–1.0 m/s)on the total thermal resistance(R_(t))of children’s bedding systems composed of duvet with different total filling weights(w,350–1000 g)in three sleep postures(P1,P2,and P3).Heat flux experiments were conducted to validate the CFD *** from the simulations indicated that a 1℃rise in T_(air)led to a reduction in R_(t)by 0.09–0.11 ***,R_(t)decreases with the increase in V_(air),and the reduction in R_(t)slows down as V_(air)*** in T_(air)and V_(air)had the most significant impact on R_(t)in the P2 sleep position and the least effect in the P3 sleep *** on the simulation results,a prediction equation for the R_(t)of the children’s bedding systems was *** research findings offer valuable insights into the scientific selection and design of children’s bedding systems,which are crucial for improving children’s sleep quality.
The development of modern mathematical theory, especially two-dimensional fractal graph algorithm, provides a possibility for large-scale landscape data processing. Landscape digital identification technology is an in...
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The development of modern mathematical theory, especially two-dimensional fractal graph algorithm, provides a possibility for large-scale landscape data processing. Landscape digital identification technology is an innovative technology based on digital landscape technology and computer identification of experimental data. It is an important artificial intelligence technology, which includes three steps: landscape acquisition, landscape processing and landscape identification. The characteristics of the scene in the landscape picture can be collected by special instruments, such as cameras, etc., and then the collected data can be processed by two-dimensional fractal graph algorithm, and finally realice the automatic identification of the landscape. For images with significant boundary characteristics, we can extract the boundary of the región quickly and accurately, so as to realice the segmentation of the region. However, when the edge features of the image are not good enough, there is little color difference between the background and the region, or there is some interference, the result will be very bad. In this paper, based on the two-dimensional fractal graph generation algorithm, a series of optimization of landscape architecture planning and design. The accuracy of landscape prime number can reflect whether specific types of landscape pictures can be correctly identified and divided. 200 Pictures are divided into six categories, namely Water scene, landscape scene, living scene, sky scene, architecture and transportation then exact ratios of two-dimensional fractal graph network -8s, two-dimensional fractal graph network - 16s, two-dimensional fractal graph network -32s and two-dimensional fractal graph network -32s. It reached the best level in pixel accuracy, average accuracy, average IU, etc., and the pixel accuracy has reached as high as 100%, average accuracy has reached 100%, average accuracy has reached 100%. When compared to the recommended algorith
In blockchain-based order book systems, buyers and sellers trade assets, while it is miners to match them and include their transactions in the blockchain. It is found that many miners behave selfishly and myopically,...
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This paper presents a comprehensive review of the latest advancements in fabric defect detection leveraging machine learning techniques. It introduces the characteristics of textile defects and public datasets, and en...
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