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Article
Publication date: 1 January 2012

Mohammad Saidi Mehrabad, Mona Anvari and Morteza Saberi

This study aims to investigate the development of predictive tools in performance measurement and management (PMM), and modeling of a forward‐looking method to help managers to…

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Abstract

Purpose

This study aims to investigate the development of predictive tools in performance measurement and management (PMM), and modeling of a forward‐looking method to help managers to quantitatively target performance measures based on achieving desired improvement, minimum cost and strategic priorities.

Design/methodology/approach

A case‐based methodology is used to test the conceptual approach in a production system. Mathematical models are used to model modules of the proposed approach. The proposed approach is applied to an actual conventional power plant unit to show its applicability and superiority over conventional methods.

Findings

The developed system enables managers to develop systematic ways to manage future performance; for example, planning, performance forecasting and target setting. The predictive ability of the developed system is comparable with the judgment of the manager in the case company.

Originality/value

This paper proposes the use of mathematical models in the development of performance measures targeted on performance prediction and desired improvement. The paper also offers practical help to organizations to embed a forward‐looking capability into their operations.

Details

International Journal of Productivity and Performance Management, vol. 61 no. 1
Type: Research Article
ISSN: 1741-0401

Keywords

Article
Publication date: 17 May 2023

Abbas Rezaeian, Mona Mansoori and Amin Khajehdezfuly

Top-seat angle connection is known as one of the usual uncomplicated beam-to-column joints used in steel structures. This article investigates the fire performance of welded…

Abstract

Purpose

Top-seat angle connection is known as one of the usual uncomplicated beam-to-column joints used in steel structures. This article investigates the fire performance of welded top-seat angle connections.

Design/methodology/approach

A finite element (FE) model, including nonlinear contact interactions, high-temperature properties of steel, and material and geometric nonlinearities was created for accomplishing the fire performance analysis. The FE model was verified by comparing its simulation results with test data. Using the verified model, 24 steel-framed top-seat angle connection assemblies are modeled. Parametric studies were performed employing the verified FE model to study the influence of critical factors on the performance of steel beams and their welded angle joints.

Findings

The results obtained from the parametric studies illustrate that decreasing the gap size and the top angle size and increasing the top angles thickness affect fire behavior of top-seat angle joints and decrease the beam deflection by about 16% at temperatures beyond 570 °C. Also, the fire-resistance rating of the beam with seat angle stiffener increases about 15%, compared to those with and without the web stiffener. The failure of the beam happens when the deflections become more than span/30 at temperatures beyond 576 °C. Results also show that load type, load ratio and axial stiffness levels significantly control the fire performance of the beam with top-seat angle connections in semi-rigid steel frames.

Originality/value

Development of design methodologies for these joints and connected beam in fire conditions is delayed by current building codes due to the lack of adequate understanding of fire behavior of steel beams with welded top-seat angle connections.

Details

Journal of Structural Fire Engineering, vol. 15 no. 1
Type: Research Article
ISSN: 2040-2317

Keywords

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