نتایج جستجو برای: casing collapse

تعداد نتایج: 38499  

Journal: :Artificial Intelligence Review 2021

Ensuring proper punctuation and letter casing is a key pre-processing step towards applying complex natural language processing algorithms. This especially significant for textual sources where are missing, such as the raw output of automatic speech recognition systems. Additionally, short text messages micro-blogging platforms offer unreliable often wrong casing. survey offers an overview both...

M. Ghasemiazar, S. Gholizadeh,

This study is devoted to seismic collapse safety analysis of performance based optimally seismic designed steel chevron braced frame structures. An efficient meta-heuristic algorithm namely, center of mass optimization is utilized to achieve the seismic optimization process. The seismic collapse performance of the optimally designed steel chevron braced frames is assessed by performing incremen...

Journal: :Energies 2021

The tightness of the casing-rock formation interface is one most important elements drilling and cementing jobs. In absence required tightness, there a risk gas migration directly to ground, groundwater or atmosphere. order eliminate this type uncontrollable unfavorable flows, casing column sealed with cement slurry in annular space beyond casing. Cement displaces mud present space, although ca...

Journal: :Journal of engineering for gas turbines and power 2021

Abstract This contribution focuses on the combined analysis of mistuning and unilateral blade-tip/casing contacts. A two-dimensional (2D) phenomenological finite element (FE) model an aircraft engine fan stage is considered. It reduced by means Craig–Bampton component mode synthesis method contact treatment relies a Lagrange multiplier algorithm within explicit time-integration scheme. Blade-ti...

Journal: :Journal of Petroleum Exploration and Production Technology 2021

Abstract Cement bond logs (CBL) and variable density log (VDL) are one of the vital logging techniques used to evaluate cement-casing-formation bonds before well testing or execution production operation in well. These also crucial during workover maintain integrity The provide a clear view quality cement with casing formation. microannulus other deviations bonding between formation recorded us...

Journal: :Mathematical Problems in Engineering 2022

In this work, the wellhead axial movement of a subsea well was predicted with previously presented multi-string model modified to account for possible buckling well’s surface casing. This represented structural casing nonlinear spring that considers casing-soil interaction using t-z curves hysteretic behavior. addition, modeled incorporates deformation when effective force is compressive and ma...

Journal: :Mushroom Research 2022

Calocybe indica is well known for its nutritional value, longer shelf life and ability to grow in warm humid climatic conditions. Casing material plays an important role cultivation yield determination. The present study explored the impact of different casing on biological efficiency (BE) indica. Here, we have used eight types sterilized thorough formalin, tunnel pasteurization autoclave metho...

Journal: :Electronics science techology and application 2021

<p>Due to the thin and rigid wall of aeroengine casing, it is easy reduce machining accuracy due vibration machine tools cutting tools. Therefore, this paper designed an auxiliary fixture that can suppress such vibration.According absorption principle tuned mass damper, transfer energy casing so as itself.According Ansysworkbench analysis, significantly casing.The results show maximum amp...

Journal: :international journal of civil engineering 0
s. karimiyan int’l institute of earthquake eng. and seismology (iiees), tehran, iran no. 21, arghavan st., north dibajee, farmanieh a. moghadam int’l institute of earthquake eng. and seismology (iiees), tehran, iran no. 21, arghavan st., north dibajee, farmanieh a. . husseinzadeh kashan department of industrial engineering, faculty of engineering, tarbiat modares university, tehran, iran m. karimiyan 4applied science and technology university, tehran, iran

plan irregularity causes local damages being concentrated in the irregular buildings. progressive collapse is also the collapse of a large portion or whole building due to the local damages in the structure. the effect of irregularity on the progressive collapse potential of the buildings is investigated in this study. this is carried out by progressive collapse evaluation of the asymmetric mid...

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