ABSTRACT
Development and feasibility assessment of a rotational
orthosis for walking with arm swing
Interlimb neural coupling might underlie human
bipedal locomotion, which is reflected in the fact that people swing their arms
synchronously with leg movement in normal gait. Therefore, arm swing should be
included in gait training to provide coordinated interlimb performance. The
present study aimed to develop a Rotational Orthosis for Walking with Arm Swing
(ROWAS), and evaluate its feasibility from the perspectives of implementation,
acceptability and responsiveness. We developed the mechanical structures of the
ROWAS system in SolidWorks, and implemented the concept in a prototype. Normal
gait data were used as the reference performance of the shoulder, hip, knee and
ankle joints of the prototype. The ROWAS prototype was tested for function
assessment and further evaluated using five able-bodied subjects for user
feedback. The ROWAS prototype produced coordinated performance in the upper and
lower limbs, with joint profiles similar to those occurring in normal gait. The
subjects reported a stronger feeling of walking with arm swing than without.
The ROWAS system was deemed feasible according to the formal assessment
criteria.
Aerodynamic analysis of a LMP1-H racing car by using Solidworks
flow simulation
The paper reports on the use of integrated
Computer Aided Design (CAD) and Computational Fluid Dynamic (CFD) tools within
an undergraduate teaching and learning (T&L) environment. Solidworks and
the embedded CFD are powerful tools to make students familiar with engineering
design problems, in this case the definition within constraints of a body
surface for Drag (D) and Lift (L) forces, and the way to progress through
testing of concepts and solutions. The activity also promotes the understanding
of the value of the details of a design, as geometries apparently very similar
are shown to actually have very different drag and lift forces, and the
limitation of computational tools, both because of the physics, as separated
flows are difficult to be modelled, and the numeric, as proper mesh refinement
and development of best practice approaches linked to accurate experiments are
crucial to make simulations useful.
Static and dynamic performance evaluation of 3-DOF spindle
head using CAD-CAE integration methodology
Accurate and rapid modelling and performance
evaluation over the entire workspace is a crucially important issue in the
design optimization of parallel kinematic machines (PKMs), especially for those
dedicated for high-speed machining where high rigidity and high dynamics are
the essential requirements. By taking a 3-DOF spindle head named A3 head as an
example, this paper presents a feature-based CAD–CAE integration methodology for
the static and dynamic analyses of PKMs. The approach can be implemented by
four steps: (1) creation of a parameterized geometric (CAD) model with analysis
features in SolidWorks; (2) extraction of the features from the CAD model using
the Application Programming Interface (API) available in SolidWorks; (3)
formulation of a CAD model in SAMCEF by mapping the configuration features from
SolidWorks to SAMCEF; and (4) conversion of the analysis features into a
scripting language named Bacon for Finite Element Analysis (FEA). The merit of
this approach lies in that the FE model at different configurations can be
updated automatically in batch mode, and PKMs having different topologies can
be modeled with ease thanks to the down to link/joint level featuring. The
experiment is also carried out to verify the effectiveness of the proposed
approach.
Modelling of violin playing robot Arm with MATLAB/SIMULINK
In this research, we consider modeling of
violin playing robot arm. MATLAB/SIMULINK are used for modeling of robot arm
with seven degrees of freedom is considered, which is flexible than previously
used robot arms with 6 joint for violin playing. Also, previous robot system
which used Mitsubishi industrial robot arm (RV-2SD) is updated. In this model,
torque, current consumption and voltage of each joint can be measured.
Dynamixel-Pro from Robotis Co., Ltd. is used for the joints. This robot arm
with seven joint has same range of movement (RoM) with human. This makes our
designed robot good at violin playing. This paper presents basic violin playing
technique, 3D modeling using Solidworks software, PID control system of servo
motor using MATLAB/SimMechanics tool, and physical system of servo motor.
CFD analysis (SWFX) of micro hydro turbine used in a rural
drinking W.T.P: A case study
Hydro turbine is the most critical component in
small or micro hydropower plants as it affects the cost as well as overall
performance. Hence, for the cost effective design of any new small or micro
hydro project or for energy recovery plant from existing water infrastructure,
it is very important to predict the hydraulic behaviour and efficiency of hydro
turbine. Experimental approach of predicting the performance of hydro turbine
is costly and time consuming compared to CFD approach that saves
time-cost-effort. The aim of the paper is to predict the performance of a micro
hydro turbine (MHT) using Solidworks-FloXpress (CFD analysis) and to validate
the same with model testing results. To the best of the author’s knowledge this
novel approach for CFD analysis of micro hydro turbine for energy recovery from
drinking water pipeline is absent in renewable energy or fluid mechanics
literature due to its assessment complexity.
Estimation of truck frame fatigue life under service loading
The article presents the methods for
experimental and theoretical research of vibration loads and dynamic stresses
of automobile frame. The comparative analysis of the finite element stress and
acceleration is performed with SolidWorks and Ansys software with the use of
resistive strain gages and g-meters data obtained during automobile road tests.
Frame fatigue life calculation of using multibody dynamics model in FRUND
software is given. Load-carrying structures of automobiles undergo external
loads which are time- and frequency-variable, depending on velocity, current
weight, road profile and other factors. Such loading mode provokes the
occurrence of fatigue cracks, and their promotion can entail fracture. Thus,
frames and load-carrying structures are subjects of cyclic loading tests
purposed to estimate stress level and reliability of the structures and detect
possible failures. The motion was considered for following road types: concrete
road, smooth cobblestone road and special cobblestone profile. Road types and
automobile velocities are corresponding to input data for dynamic simulation in
FRUND multibody dynamics system.
Feel free to contact us for more details on any of this projects and for training on any modern day analysis software like: Matlab , ANSYS, SPSS, Solidworks, SolidCAM, Python, Design expert e.t.c.
