First of all, we should be clear in the R & D process optimization of light product did not patent can query. On the contrary, the selection of the design strategy is largely decided by the use case, each time for a designer is a new and great challenge. Since almost no long can rely on the guidelines and related terms, so it is difficult to construct the structure of modern automobile. The process of research and development has been a new content, higher levels of creativity. And its interdisciplinary research and development team, the team should cover the entire engineering chain, from the initial plastic raw materials research and development and processing. To the virtual R & D and production process of products, and then to the quality of the whole light design assurance and recycling.
In order to make the structure of the car more cost feasibility, in the selected drive concept, the need for a detailed analysis of the weight ratio. For example, one thing is clear, taking into account the front wheel drive vehicle, especially the front, not just before and after the collision region, must carry the weight optimization. Because it is weight concentrated area (the traditional system of power plant,). This requires the distribution of weight to the front and rear axles balance, in order to facilitate manipulation. More favorable light structure on the back of a car on a rear wheel drive car, because the rear focus greater weight (differential gear). Safety unit, light car at the top of the measures is to reduce the area of city center of gravity of the car. At the bottom of the car, which requires the use of lightweight materials, because it avoids the shell of a car and a power device will be the focus of increased car.
In the development process of automobile parts. To consider load state of parts, the concept design using appropriate materials and institutions, in short, the need to consider the restrictions in the production process. In the initial stages of development, must be according to the specific application of technology and economy, maintainability and recycling to make the right decision. Optimized design to get the best results on the basis of the existing case:
Differential method (differential), integral method (integral), integral method (integratinghybrid).
Every new or relatively new development should adhere to the basic guiding theory: selected materials must be with structure and production method choice directly connected closely.
Integral component has the function of integration is very high, can by injection molding and compression technology realized the modern. In contrast, a single element in the differential mechanism in the institutions are usually very complex, needs to use the adhesive technology combining different materials together properly.
Here, bonding technology is a kind of cold bonding (T<200℃), suitable for sheet material laminated adhesive, not in this other method is adopted for connection or the cost is very high. With the continuous development and improvement of the bonding technology, we will see more and more support of bonding connection. At the same time we will also find bonding technology will and bonding technology of other combination to make up the deficiencies of each other. Bonding combination will be beneficial in combination with higher strength, then you can get the relative balance of force change in a wide range, and the single gluing technology will crack.
Is now in need of better adaptability to light supporting mechanism of bonding technology mining potential, these lightweight support structure is made of plastic or polymer based composite material. For example in the 2005 version of the Volkswagen Passat car, Remform screws are used to direct the accessory mounted to the mounting plate (KMU), the mounting plate is made of PP-GF30. Channel and cable is kept in the original position through the integration of the function of the chip.
On the other hand, metal plastic mixing technology has been applied quickly in many supporting the body element. This hybrid technology is built on this basis: the combination of metal drawing forming and plastic injection molding technology of the two methods, to produce can have the function of combination of components is very high installation. Due to these components of the rigidity and strength of the loads, so you can get more light components by these methods.
In the thin-walled structure needed, loading and unloading areas spread area of city is usually fracture zone, this is because the thin wall section and flat to buckle and dent sensitive. This large load range instability can be reduced by computing the plastic floor structure to greatly. For example, in the GFC- steel mixed element, steel can bear to load their yield point, if the thin wall board is composed of a glass fiber reinforced nylon (PA6-GF) made of, can avoid the cracking.
In addition to increase the members through the stiffened plate rigid, but also through the plastic is coated on the metal surface to improve the number of functional components. For example, some functional elements (such as plug-ins) by injection molding at one time be fixed to the Ford - Fawkes, Audi before A6 bar. At the same time, but also improve the functional properties of components. Do not only can reduce the number of individual parts and the processing steps. Also can reduce the cost of assembly parts.
Because of its low density of lightweight application is very suitable for automobile structure. Among the many available plastics, application of almost every kind of technology can find a to meet their special geometrical requirements, thermodynamic performance and aesthetic requirements of the plastics. Plastics can enhance agent on the properties of produced huge change by additive and, such as strength, elasticity, lubrication, electrical properties, thermodynamic properties and sound insulation performance, and the friction and abrasion resistance.
Polymers in many aspects of performance to ensure that its position in automotive engineering. Application of place from inside the car to the engine room, from the structural element to an external body parts. However the inside and small parts
