Mold flow download

AbstractThe co-simulation of mold flow and structure plays an important role in the design of injection molded fiber-reinforced thermoplastic (FRT) parts. The mold flow model is usually a single-part model, that is, the FRT part itself, but the mechanics model is often a multi-part model, an assembly of the FRT part and others. As the material properties of the FRT part can only be obtained from mold flow simulation, how to use them in structure simulation leaves a great difficulty to engineering applications. This paper presents an effective method to convert material data from mold flow simulation software Moldflow to structure simulation software Abaqus for thin-walled parts that can be meshed into 2D shell elements. First, a combination of hash-map and vector is used for quick element storage and search. The hash-map is three dimensional, indexed by the integer coordinates of the center of the cubes obtained from spatial subdivision. Each node of the hash-map contains a vector to store the elements, whose centroids fall in the same cube. Second, a fiber redirection method is proposed, aiming to adjust the fibers from lying within the flow elements to lying within the structure elements based on the coordinate transformation theory. Finally, the Poisson’s ratio of the Tandon-Weng model is modified, which is the default model for Moldflow to measure the properties of the FRT material, but its Poisson’s ratio is not correct. Test cases show that for an Abaqus FEM model, containing about 200,000 elements in total, and about 100,000 of them belonging to the FRT part, the conversion of material data can be done completely in less than 10 min with the method proposed in this paper. Importantly, the element matching rate can be up to 99%, and finally the accuracy of the structure simulation is significantly improved.Graphical abstract Access this article Log in via an institution Subscribe and save Get 10 units per month Download Article/Chapter or eBook 1 Unit = 1 Article or 1 Chapter Cancel anytime Subscribe now Buy Now Price excludes VAT (USA) Tax calculation will be finalised during checkout. Instant access to the full article PDF. Similar content being viewed by others Explore related subjects Discover the latest articles, news and stories from top researchers in related subjects. ReferencesZou W, Huang J, Zeng W, Xiang Lu (2020) Effect of Ethylene–Butylacrylate–Glycidyl Methacrylate on Compatibility Properties of Poly (butylene terephthalate)/ Thermoplastic Polyurethane Blends. Energy Environ Sci 9:67–73CAS Google Scholar Jiang Guo Xu, Liu LH, Young DP, Song G, Song K, Zhu J, Kong J, Guo Z (2021) Tunable magnetoresistance of core-shell structured polyaniline nanocomposites with 0-, 1-, and 2-dimensional nanocarbons. Adv Compos Hybrid Mater 4:51–64Article Google Scholar Guo J, Chen Z, Abdul W, Kong J, Khan MA,

The Complete Guide to Mold Making with SOLIDWORKS 2022 is a quick paced book written to provide experienced SOLIDWORKS users with in-depth knowledge of the mold tools provided by SOLIDWORKS. Throughout this book you will learn the procedures necessary for using these tools to create and analyze effective mold designs. Utilizing step-by-step instructions, each chapter of this book will guide you through different tasks, from designing or repairing a mold, to developing complex parting lines; from making a core in the part mode to advancing through more complex tasks in the assembly mode. Throughout this book you will be introduced to using surfacing tools to repair models and prepare them for the mold making process. Towards the end of this book, you will learn how to work with SOLIDWORKS Plastics and Flow Simulation to simulate the way melted plastics flow during the injection molding process. You will also learn to analyze the thick-thin wall regions to predict defects on plastic parts and molds. Learning how to analyze plastic parts for errors and correct them early in the design stage is a valuable skill, which can save a significant amount of time throughout the span of the entire design process. Every project in this book is based on real world products. Each of these projects have been broken down and developed into simple, comprehensible steps. Furthermore, every mold design is explained very clearly in short chapters, ranging from 15 to 25 pages. Each step comes with the exact screen shot to help you understand the main concept of the design. Learn the mold designs at your own pace, as you progress from simple core and cavity creation to more complex mold design challenges. This book will also teach you to use various surfacing tools such as: Ruled Surface Planar Surface Knit

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Gather at the junction of grains, causing intergranular corrosion, and the metal matrix will be broken due to intergranular corrosion. Electroplating accelerates this disaster. The parts affected by intergranular corrosion will expand and jack up the coating, resulting in bubbles on the casting surface. Especially in humid environment, intergranular corrosion will make the zinc die casting deformed, cracked and even broken.3. Cracks: water marks, cold cracks, hot cracksWater mark and cold shut off line: ● During the filling process, the molten metal that enters first contacts the mold wall and solidifies prematurely, and then the molten metal cannot be fused with the solidified metal layer, resulting in overlapping lines and strip defects at the butt joint of the casting surface. Generally, the water marks are shallow on the surface of the casting, while the cold insulation may penetrate into the inside of the casting.Hot crack:● When the casting thickness is uneven, the solidification process will produce stress.● If the casting is pushed out prematurely, the metal strength is not enough.● When the casting is ejected, the stress is uneven● If the mold temperature is too high, the grain will be coarse.● Harmful impurities exist.The above factors may cause cracks. When there are water marks, cold cracks and hot cracks in the zinc alloy die casting, the solution will penetrate into the cracks during electroplating, and it will be converted into steam during baking, and the air pressure will lift the electroplated coating to form bubbles.Solutions To Bubble Defects– The key to control porosity is to reduce the amount of gas mixed into the casting. The ideal metal flow should be continuously accelerated from the nozzle through the splitter cone and runner into the mold cavity to form a smooth and consistent metal flow. The conical runner design is adopted, that is, the pouring flow should be gradually reduced from the nozzle to the gate, which can achieve this goal. In the filling system, the mixed gas is due to the mixing of turbulence and liquid metal to form pores. From the study of simulating zinc alloy die casting process of molten metal from the casting system into the cavity, it is obvious that the sharp transition position in the gate and the increasing cross-section area of the gate will make the metal flow turbulent and air entrained, and the stable molten metal is conducive to the gas from the gate

Ice mold fills with water, the cooling process begins. It is the job of the freezer or refrigerator to freeze the water; it is not the job of the ice maker. The temperature in the unit determines how well and how fast the water in the mold freezes.There is a built-in thermostat in the ice maker which keeps an eye on the level of the temperature of the water inside the mold. So when the temperature drops low enough, the thermostat causes an electrical circuit switch to close.What the closed switch does is allow current to flow through a coil beneath the ice maker. This is a heating coil, and when it gets warm enough, it causes the ice mold to get warm. This loosens the ice cubes that have already formed in the ice mold.At this point, the ice maker’s motor is activated by the electrical circuit. The motor turns a gear which causes another gear to rotate. The second gear is attached to a long shaft, made of plastic, that has ejector blades.As the gear rotates, these blades rotate as well, scooping the ice cubes out of the ice mold. Due to the design of the mold, the cubes connect to each other so they come out as one unit.The ice maker’s front has plastic notches that match the ejector blades. So the blades easily push the ice cubes through the notches and dump them in the ice bucket.How Another Cycle StartsAt the base of the plastic shaft to which the blades are attached, there is a notched cam made of plastic. Now, as the ejector blades are about to dump the cubes, this plastic cam catches the ice maker’s shutoff arm and lifts it up. So after the ejector blades dump the ice cubes, the cam releases