Khalid Hussain
University of Bradford
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Khalid Hussain.
Logistics Information Management | 2000
Razman Mat Tahar; Khalid Hussain
Key issues of the application of modelling and simulation for the management of the Malaysian Kelang Container Terminal are discussed. The aim of the investigation is to improve the logistics processes at the port. The model simulates all processes required to operate the seaport efficiently and provides detailed statistics on the seaport through‐put and utilisation characteristics with a high level of accuracy. The quay cranes allocation, the resources allocations and the scheduling of the different operations are modelled to maximise the performance of the port. The assignment of prime movers to transport containers to a yard area is also considered.
The Tqm Journal | 2010
Rajab Abdullah Hokoma; Mohammed Khurshid Khan; Khalid Hussain
Purpose – This paper aims to investigate the present status of the implementation levels of total quality management (TQM), just‐in‐time (JIT) and manufacturing resource planning (MRPII) within the iron and steel industry in Libya and the management implications for this industry.Design/methodology/approach – A survey methodology was applied in this investigation using an extensive questionnaire and one‐to‐one interviews within the correspondent Libyan iron and steel industry.Findings – Based on the analysis of the questionnaire survey and the one‐to‐one interview responses, the results show that the strategies applied by the executive management body towards most of the areas that are considered as being crucial in any successful implementation of the investigated quality and manufacturing management techniques and philosophies are not well planned. The actual implementation levels of the TQM, JIT and MRPII practices were found to be in the modest levels within the surveyed industry. The paper has identi...
Journal of Manufacturing Technology Management | 2008
Rajab Abdullah Hokoma; Mohammed Khurshid Khan; Khalid Hussain
Purpose – The purpose of this paper is to investigate the implementation level of just‐in‐time (JIT), manufacturing resources planning (MRPII) and total quality management (TQM) within the cement industry in Libya.Design/methodology/approach – This paper covers an overview of the investigated manufacturing and quality techniques and philosophies. A survey methodology has been applied in this investigation using an intensive questionnaire to the correspondent organizations.Findings – Based on the analysis of the survey questionnaire responses, the results show that the management body does not have a clear strategy towards most of the areas that are considered as being crucial in any successful implementation of the JIT and MRPII techniques/philosophies, with slightly better results for TQM. The research has identified limitations within the investigated areas and has pointed to areas where the management should take immediate action in order to achieve successful and effective implementation of JIT, MRPII...
Engineering Applications of Computational Fluid Mechanics | 2013
Jaan Hui Pu; Songdong Shao; Yuefei Huang; Khalid Hussain
Abstract The standard shallow water equations (SWEs) model is often considered to provide weak solutions to the dam-break flows due to its depth-averaged shock-capturing scheme assumptions. In this study, an improved SWEs model using a recently proposed Surface Gradient Upwind Method (SGUM) is used to compute dam-break flows in the presence of a triangular hump. The SGUM allows the SWEs model to stably and accurately reproduce the highly complex shock currents caused by the dam-break event, as it improves the treatment of SWEs numerical source terms, which is particularly crucial for simulating the wet/dry front interface of the dam-break flow. Besides, an Incompressible Smoothed Particle Hydrodynamics (ISPH) modeling technique is also employed in this study to compare with the performance of the SGUM-SWEs model. The SPH method is totally mesh free and thus it can efficiently track the large free surface deformation. The ISPH approach uses a strictly incompressible two-step semi-implicit solution method. By reproducing a documented experimental dam-break flow, it has demonstrated that both model simulation results gave good agreement with the experimental data at different measurement locations. However, the ISPH simulations showed a better prediction of the dam-break peak wave building-up time, where its superiority was demonstrated. Furthermore, the ISPH model could also predict more detailed flow surface profiles across the streamwise flow direction and the velocity and pressure structures.
International Journal of Sediment Research | 2014
Jaan Hui Pu; Khalid Hussain; Songdong Shao; Yuefei Huang
Abstract Based on the common approach, the adaptation length in sediment transport is normally estimated astemporally independent. However, this approach might not be theoretically justified as the process of reaching the sediment transport equilibrium stage is affected by the flow conditions in time, especially for fast moving flows, such as scour-hole developing flows. In this study, the two-dimensional (2D) shallow water formulation together with a sediment continuity-concentration (SCC) model were applied to flow with mobile sediment boundary. A time-varying approach was proposed to determine the sediment transport adaptation length to simulate the sediment erosion-deposition rate. The proposed computational model was based on the Finite Volume (FV) method. The Monotone Upwind Scheme of Conservative Laws (MUSCL)-Hancock scheme was used with the Harten Lax van Leer-contact (HLLC) approximate Riemann solver to discretize the FV model. In the flow applications of this paper, a highly discontinuous dam-break, fast sediment transport flow was used to calibrate the proposed time-varying sediment adaptation length model. Then the calibrated model was further applied to two separate experimental sediment transport flow applications documented in the literature, i.e. a highly concentrated sediment transport flow in a wide alluvial channel and a sediment aggradation flow. Good agreement with the experimental data were obtained with the proposed model simulations. The tests prove that the proposed model, which was calibrated by the discontinuous dam-break bed scouring flow, also performed well to represent rapid bed change and steady sediment mobility conditions.
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering | 2013
Masri Baharom; Khalid Hussain; Andrew J. Day
This paper presents a method of designing a full electrical power steering system to replace a hydraulic power-assisted steering system with improved performance and benefits including energy saving, improved steering ‘feel’, simpler construction and environmental gain. The designed performance of the electrical power steering system represented an ideal hydraulic power-assisted steering power boost curve which was mathematically modelled to provide the required control characteristic for the electrical power steering system, including variation in the perceived power assistance with the vehicle’s forward speed. A full electrical power steering system provides all the torque necessary to steer the wheels, and the steering feel is artificially generated by an electric ‘feedback’ motor which provides resistance to the driver’s input. The performance of the electrical power steering system described in this paper was enhanced by manipulating the reactive torque to the driver’s input at the steering wheel so that it depended upon the driving conditions. Full-vehicle software models were generated using ADAMS/car software based on an actual car fitted with hydraulic power-assisted steering and full electrical power steering. The simulation results from both models were compared, and it is concluded that the steering performances of both systems were similar but the steering feel of the full electrical power steering system could be tuned to provide improved feedback to the driver in use. The performance of the full electrical power steering system could be further improved with the introduction of a controller to manipulate the steering feel during undesired conditions.
Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics | 2005
Khalid Hussain; W. Stein; Andrew J. Day
Abstract This paper presents a multi-degrees-of-freedom non-linear multibody dynamic model of a three-axle heavy commercial vehicle tractor unit, comprising a subchassis, front and rear leaf spring suspensions, steering system, and ten wheels/tyres, with a semi-trailer comprising two axles and eight wheels/tyres. The investigation is mainly concerned with the rollover stability of the articulated vehicle. The models incorporate all sources of compliance, stiffness, and damping, all with non-linear characteristics, and are constructed and simulated using automatic dynamic analysis of mechanical systems formulation. A constant radius turn test and a single lane change test (according to the ISO Standard) are simulated. The constant radius turn test shows the understeer behaviour of the vehicle, and the single lane change manoeuvre was conducted to show the transient behaviour of the vehicle. Non-stable roll and yaw behaviour of the vehicle is predicted at test speeds >90 km/h. Rollover stability of the vehicle is also investigated using a constant radius turn test with increasing speed. The articulated laden vehicle model predicted increased understeer behaviour, due to higher load acting on the wheels of the middle and rear axles of the tractor and the influence of the semi-trailer, as shown by the reduced yaw rate and the steering angle variation during the constant radius turn. The rollover test predicted a critical lateral acceleration value where complete rollover occurs. Unstable behaviour of the articulated vehicle is also predicted in the single lane change manoeuvre.
Journal of Konbin | 2008
Mohd Kamal Mohd Nawawi; Mohammed Khurshid Khan; Khalid Hussain
Knowledge-Based Collaborative Lean Manufacturing Management (KBCLMM) System The objective of this research paper is to demonstrate the application of hybrid Knowledge-Based System, Gauging Absences of Pre-Requisites (GAP), and Analytic Hierarchy Process (AHP) approaches for selecting the improvement programs for Collaborative Lean Manufacturing Management (CLMM) System. In this research, a generic Knowledge-Based System is developed to measure the level of CLMM adoption in automotive manufacturers compared to the ideal system. Using the embedded GAP and AHP technique, the key lean manufacturing improvement programs can be prioritised by using both qualitative and quantitative criteria. The analysis covers the planning stage of the KBCLMM. The utilisation of the approach is demonstrated with an illustrative example. System Zespołowego Zarządzania Produkcją, Obniżający Nakłady, Oparty na Bazie Wiedzy Celem niniejszej pracy badawczej jest przedstawienie rozmaitych sposobów wyboru programów poprawy wydajności dla systemu Zespołowego Zarządzania Produkcją obniżającego nakłady (CLMM), opartego na Bazach Wiedzy. Omawiane sposoby, to Pomiar Niedostępności Warunków Wstępnych (Gauging Absences of Pre-Requisites - GAP) oraz Analityczne Procesy Hierarchiczne (Analytic Hierarchy Process - AHP). W ramach prezentowanej pracy badawczej opracowano generyczny System Oparty na Bazie Wiedzy pozwalający na pomiar przydatności systemu CLMM w zakładzie produkcyjnym przemysłu samochodowego w porównaniu z systemem idealnym. Dzięki zastosowaniu wbudowanych technik GAP oraz AHP można optymalizować kluczowe programy zarządzania produkcją, określając priorytety za pomocą kryteriów ilościowych, jak i jakościowych. Analiza obejmuje również etap planowania systemu KBCLMM. Wykorzystanie każdego sposobu jest przedstawione za pomocą poglądowego przykładu.
Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics | 2009
Masri Baharom; Khalid Hussain; Andrew J. Day
Abstract The fundamentals and preliminary analyses of an innovative future technology referred to as ‘semi-active steering’ (SAS) are presented in this article. The proposed steering system configuration is similar to a conventional electrical power-assisted steering with the replacement of the rigid steering shaft with a low stiffness resilient shaft (LSRS), the presence of which allows ‘active control’ to be performed on vehicles similar to the concept of full steer-by-wire (SBW). But, unlike SBW, the LSRS is an integral part of the system characteristics. The advantages of the semi-active system in comparison with SBW and other conventional systems are demonstrated. A mathematical model to predict the mechanical properties of the LSRS has been developed, and experiments were conducted on a medium-sized car fitted with an LSRS to verify that vehicle stability and drivability can be ensured in the event of active system failure. The results have indicated that the vehicle was stable and safe to be driven at low speeds, and is predicted to be driveable and safe at higher speeds. It is concluded that an SAS system of this type has the potential to improve the safety of SBW systems.
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering | 2005
N. Mirza; Khalid Hussain; Andrew J. Day; J. Klaps
Abstract This paper presents a simulation study into the characteristics of a vehicle experiencing steering drift under straight line braking. Simulation modelling has been performed using a multi-body dynamics analysis based on a model of an actual vehicle. Front and rear suspension parameters have been modelled as rigid links joined with flexible bushes so as to assess their effect on a vehicle while braking. Suspension geometry and alignment settings, which define characteristic responses such as lateral acceleration, yaw velocity, toe, and caster angles of a vehicle in a transient manoeuvre, are primary to a vehicles directional stability. Any symmetric inconsistencies in these settings will potentially affect a vehicles performance. The findings from this research have increased the understanding of the causes of steering drift during braking conditions.