Resistance spot welding poses potential challenges for automotive manufacturing enterprises with regard to ensuring the real-time and accurate quality detection of each spot. Nowadays, many machine learning deep methods have been proposed utilize monitored sensor data solve these challenges. However, poor results or process interpretations are still unaddressed key issues. To bridge gap, this paper takes bodies as objects, proposes a resistance online method dynamic current based on combined...

We develop a perfect competitive upstream and downstream manufacturers model in an industrial symbiosis chain that produces partially differentiated products generates pollution as byproduct. investigate the waste emission reduction decision-making of market while considering environmental regulations imposed by policy-makers or government form taxes subsidies for usage. prove regulation competition positively affect manufacturers' strategies to implement symbiosis. In addition, we discover...

This paper studies numerically the influence of louver?s fin thickness on heat transfer and flow performance a parallel evaporator, comprehensive evaluation analysis five structures at different Reynolds numbers are systematically carried out. Comparison numerical results with experimental data shows good agreement maximal errors 12.16% 5.29% for factor resistance factor, respectively. The show that coefficient pressure drop increase louver fins when number is constant. A-type best, it can...

In the context of Industry 4.0, model-based definition (MBD) has been an effective approach to creating 3D models contained all heterogeneous information needed define a product, which proposes new challenges for traditional subassembly identification method that only considers geometric product in assembly sequence planning. To bridge gap, we propose novel knowledge graph-driven enhance planning systems engineering (MBSE) paradigm. Specifically, graph is first constructed based on shape and...

A heat pump for recovery is designed to produce hot water through recovering the from superheated vapor and refrigerant in condenser. The experimental results show that performance of system with exchanger has obvious superiority over regular condenser production.

Basing on the theory of complex network and properties Eco-industrial system(EIS), this article supply heterogeneous growth model for EIS, make a theoretical study essential attribute network, such as degree distribution, convergence factor average path length. Different factors are discussed under influence in-degree out-degree distribution basic rules, in order to explore mechanism provide basis.

The collaborative decision-making and knowledge synthesization across multiple disciplines is becoming the marked characteristic one of key problems to be resolved in design complicated products. In order effectively utilize especially tacit designers, this paper presents a kind management solution for multidiscipline based on Blog. main contributions study can focused three points: first distinguish classification products design. second put forward architecture framework system. presented...

Mass customisation is an effective mechanism to satisfy the new requirements of changing markets. E-manufacturing can be seen as a good choice implement mass customisation. As support technology for customisation, part clustering product family very important in optimal formation manufacturing cells or systems and it could more efficient e-manufacturing mode than traditional mode. This paper mainly concerned with problems A mathematical model based on weighted directed graph put forward....

The identification of influential nodes is a vital step in the study complex network. Its research could optimize use limited resources on ensuring more efficient spread information. However, existing ranking methods to identify pose challenges for multi-layer They also have little consideration about node functionality. Thus, this paper, combined with constructed mapping service network high-end manufacturing equipment product system (PSS) field, novel and comprehensive method proposed find...

With the promotion and popularization of EIS in world, how to improve its structural stability is becoming an urgent problem. Based on complex network theory, this paper tries study structure with two kinds cases - "node" (enterprise system) "edge" (material energy flow channels subjected random disturbances intentional interference through indexes performance trends. After comparative analyzing actual samples virtual by Matlab, found that deliberate destruction bring whole should be much...

The problems such as the easily frosting of evaporator and poor system performance in low outdoor temperature can be effectively solved with solar-air dual-source heat pump technology. In this paper, based on previous working research group, steady distributed parameter method has been adopted to establish mathematical model a new system. operation characteristics three heating modes which are single air source mode, mode solar have studied simulation method, optimal different work...

In this paper, we describe a new methodology based on game theory for optimal process plan decision of jobs in networked manufacturing environment. The main contribution study can be focused modeling theoretic framework problem to analyze strategic behaviors multiple jobs. is formulated as non-cooperative with complete information. This divided into two sub games named and job scheduling game. former provides the latter players while payoff values. Endeavoring solve more efficiently...

The influence of the louver fin?s structure on heat transfer performance a parallel flow gas cooler is studied, and 3-D model for an elliptical fin simulated analysis resistance characteristics fin. micro-channel optimized to give best comprehensive evaluation by suitable choice thickness space between adjacent louvers given range Reynolds number.

For solving the large-scale job shop scheduling problems considering flexible routings with characteristics of process planning and optimization, a hierarchical coordination optimization model based on analytical target cascading is proposed in this paper, which divided into three sub-layers. The layer for optimal processing routes all jobs, multiple manufacturing units formed by clustering machines factor analysis method unit layer, then solutions jobs each obtained adopting improved...

For the flexible job shop scheduling problem with machine flexibility, a hierarchical optimization model based on analytical target cascading is established in this paper. In order to obtain an optimal scheme, double-layer repeats collaborative optimization, of which genetic-tabu algorithm adopted optimize path parts planning layer and improved genetic used process queue each layer. Finally, experimental results two typical examples are contrastively analyzed indicate validity proposed method.

A direct evaporation ice-on-coil thermal storage experimental equipment was designed with the copper tube of diameter 16 mm and wall thickness 1 mm. The can be arrayed at 100 × (system A), 50 B) or 60 C). static state as well dynamics experiment done disturbance non-disturbance refrigerating medium (water) in ice bank tank. results show that increasing array density, system performance improved markedly, is better than non-disturbance. According to experiment, compared A, C shortens time for...

A GWHP (groundwater source heat pump) experimental apparatus with superheated vapor recovery has been constructed in this paper. In the presetting working conditions (the inlet and outlet temperature of cooling water are respectively 18°C 26°C, chilled 12°C 7°C), effects system on suction discharge compressor, evaporation condensation have studied. The research results show that compared without recovery, better operating stability, condition further improved.