PVC frame cutting process by guillotine is a common method that attracted attention of car parts and PVC decorating furniture producers. In this paper, the effects of main parameters such as cutting speed, lubricants and cutting frame holder pressure force on PVC frame section surface smoothness is investigated by experimental methods on a specified PVC frame sample and then by FEM simulation u...

Original scientific paper RC frame structures with specially shaped columns and RC frame structures with rectangular columns are different types of structures with different column sections. A progressive collapse analysis model of RC frames was proposed using the beam-column element and joint element based on the program OpenSees. Progressive collapse performance of the experimental frame was ...

Infilled frame structures are commonly used in buildings. Masonry infilled RC frames are the most common type of structures used for multi-storeyed constructions in the developing countries, even in those which are located in seismically active regions also. Masonry infill walls are mainly used to increase initial stiffness and strength of reinforced concrete (RC) frame buildings. In the presen...

This is an introduction to the problems connecting frame theory and the Kadison-Singer Problem. 1. Overview For an extensive introduction to the aspects of frame theory needed for an understanding of the Kadison-Singer Problem we refer to the survey paper [3], which is posted in this section of the web page “The Kadison-Singer Problem”. In the following section we will just give the basic defin...

1 We consider the semantics of predicate Kripke frames with equality (called I-frames, for short), which is equivalent to the semantics of Kripke sheaves (see [3]). Namely, a (predicate) Kripke frame is a pairM = (W,U) formed by a posetW with the least element 0W and a domain map U defined on W such that U(u)⊆U(v) for u≤v. An I-frame is a triple M = (W,U, I), in which (W,U) is a Kripke frame an...

This work applies 64,765 simulated seismic ground motions to four models each of 6or 20-story, steel special moment-resisting frame buildings. We consider two vector intensity measures and categorize the building response as “collapsed,” “unrepairable,” or “repairable.” We then propose regression models to predict the building responses from the intensity measures. The best models for “collapse...

In this paper, the experimental modes of a large-scale photoelectric theodolite tracking frame are presented. On basis data and gradient-less optimization approach, modeling strategy parameterized equivalent dynamic finite element model Shafting, three-point leveling units, other components reasonably simplified during process. Influence factors such as contact stiffness introduced parameters i...

Here we extend the Madelung transformation of Schr\"{o}dinger equation into a fluid-like form to include influence an external electromagnetic field on charged particle. The vorticity fluid is then in opposite direction imposed magnetic and equal magnitude cyclotron angular frequency. When particle motion confined plane, perpendicular field, equivalent flow dynamics that zero absolute obtained ...