Abstract The qualities of injection-molded parts are affected by process parameters. Warpage and volume shrinkage two typical defects. Moreover, insufficient or excessively large clamping force also affects the quality cost process. An experiment based on orthogonal design was conducted to minimize above Moldflow software used simulate injection each experiment. entropy weight determine index, comprehensive evaluation value calculated, multi-objective optimization transformed into...

ABSTRACT Plastic production quality, manufacturing cost, and molding efficiency are three important indices for a new product development. In addition to injection process parameters (IMPP), runner system also has an role in the process. this study, plastic costs, considered as optimized objectives. The design include diameters IMPP. improved Kriging surrogate model (Gkriging), nondominated sorting genetic algorithm (NSGA‐II), multicriteria fuzzy decision‐making approach (vague sets)...

Abstract ECG recorders are precision medical devices, but their thin-walled shells susceptible to warpage and shrinkage during injection molding production due the process, which greatly shortens service life. To address this problem, a multiobjective optimization method for process parameters based on combination of BP neural network model optimized by an ant colony algorithm (ACO-BP) improved non-dominated sorting genetic (NSGA-II) is proposed. The study takes deformation amount volume...

Abstract Injection molding of thin-walled plastic parts with minimum deformation in warpage and volume shrinkage is crucial for part quality. Simulation combined Latin hypercube sampling approach was used to research the effects different process parameters on deformation. Then, random forest regression (RFR) construct mathematical relationship between defects, such as shrinkage. The gaussian probabilistic surrogate model, while probability improvement acquisition function a Bayesian...

<div>In the process of injection molding, vacuum pump rear housing is prone to warping deformation and volume shrinkage, which affects its sealing performance. The main reason improper control large flat structure housing, does not meet production assembly requirements (the warpage should be controlled within 1.1 mm shrinkage 10%). To address this issue, study initially utilized orthogonal experiments obtain training samples conducted a preliminary analysis using gray relational...

Owing to the influence of injection molding process, warpage and volume shrinkage are two common quality defects for products manufactured by glass fiber-reinforced plastic (GFRP) molding. To minimize these defects, an extreme learning machine optimized with a genetic algorithm (GA-ELM), multi-objective firefly (MOFA), decision-making method (GRA-TOPSIS) were implemented in this study. All experiments, based on Latin hypercubic sampling (LHS), conducted using Moldflow software obtain results...

A stabilizer bar in a suspension system is useful for preventing excessive rolls vehicle maneuvers like cornering. Stabilizer bars are supported with bushings by either frame or subframe. To prevent the axial movement of within bushing, features add on collars, upset rings, grippy flats etc. used bar. At Visteon Corporation, several new - bushing systems developed where such prevented use compressive force. Relative merits different compared terms roll stiffness and maximum stress through...

In order to improve the impact toughness and reduce inclusion, rare earth element Ce stable Ti are added in low chromium nickel ferritic stainless steel welded joints heat treatment. The Charpy test tensile carried out fracture structure analyzed. results show that when ratio of is 0.24% 0.72% steel, mechanical properties best. energy joint 9.4 times more than samples without Ti, also increased by 123.6% after treatment strength increases 41.9% main ductile dimple, shape dimples parabolic....

Abstract Based on the tuna swarm optimization-based support vector machine (TSO-SVM) and multi-objective sparrow search algorithm (MOSSA), this paper proposes a optimization approach for injection molding of thin-walled plastic components, addressing issues warpage deformation volume shrinkage that compromise quality. Firstly, data samples are obtained based Box–Behnken experimental design computer-aided engineering (CAE) simulation. Subsequently, SVM is employed to build predictive model...

Dual-phase (DP) steel is a kind of advanced high strength (AHSS) and widely used in the automobile industry. However, method optimizing welding parameters through practical production time-consuming optimal solution would be ignored easily. The temperature field, residual stress field deformation DP780 during process are studied by numerical simulation. Results show that double ellipsoid heat source model selected this study consistent with actual production. around line elliptical. At same...

<sec>The one-dimensional (1D) Su-Schrieffer-Heeger (SSH) chain is a model that has been widely studied in the field of topological physics. The two-dimensional (2D) SSH 2D extension 1D and many unique physical properties. It higher-order insulator (HOTI), which corner states with bound continuum (BIC) properties will arise between second energy band third band. There are two different phases isotropic model, phase transition happen when intracell coupling strength equal to intercell...