1 I n t r o d u c t i o n The boundary perturbation method (BPM) is now widely developed both in solid and fluid mechanics (although not always under this name). Older results are presented in the monograph by Morse and Feshbach (1953), and a recent survey by Guz and Nemysh (1987) gives 310 references (mostly Ukrainian and Russian). The monograph by Guz and Nemysh (1989) presents in detail two ...

Designing an injection molded plastic part requires optimizing the part with respect to various stakeholders’ needs throughout its life cycle. The conditions in which a product is operating in service are often inadequately understood or specified, resulting in wrong material selection, which in turn leads to failure when the product is used. Many aspects interrelate with the initial part desig...

In this paper we will present a mechanical study made on the design of thermal conductive plastic parts. Out our derived new rules that are useful for engineers have to create parts built from type materials. We used Catia V6 software modelling and ANSYS Moldflow simulate behaviour real components. The solutions resulted trials improving quality plastics. test simulation results lead us designi...

With the increasing output of new energy vehicles, higher requirements are put forward for automotive plastics. On basis accurately understanding advantages and applicable conditions various plastic materials, according to relevant standards, it is great significance development vehicle manufacturing industry design apply them vehicles. Taking bio-plastics carbon fiber reinforced plastics as ex...

the trial randomized complete block design with four replications in summer 1394 on a farm in the village of dotuyeh, kahrizak district located in the share ray to study the effects of different methods of weed control on qualitative and quantitative yield forage corn varieties (sc.704) do was. the experiment consisted of black plastic mulch, on black plastic mulch silver, mung bean living mulc...

Plastics are certainly most versatile of all known materials today and have therefore, established themselves in enviable position from where are not even possible to replaced. Injection molding machine is one of the most widely used method of conversion of plastic into various end products application to wide range of plastic materials from plastic commodity to specialty engineering plastic. I...