Welcome to Mech Solutions

FAQ: Design & Simulation

About CAD Design

What software do you use in CAD design and animation?

Mech Solutions Ltd is legal to use SOLIDWORKS® 3D CAD, SOLIDWORKS® COMPOSER , RHINOCEROS, Fusion 360, AutoCAD. Our customer can choose to use their license or pay reasonable hourly rate to use our license.

We can also CATIA, NX UNIGRAPHIC and RHINOCEROS but we don’t have license. We can work on-site and use your license to finish the project if our software is not compatible to your requirement.

Do you use the latest version of Solidworks?

Yes, we do. But we can also use the previous version which depends on your request.

Which kind of CAD service do you provide?

In general, we have drawing, 3D design, animation, rendering, and graphical communications. For more details, please go to our CAD page.

Do you guys have many years’ experience on CAD design?

Yes, we do, we work for several project during our past years, we hold CSWE expert, which is Solidworks Expert Certificate.

About FEA Simulation

What is Finite Element Analysis (FEA)?

The FEA is a novel numerical method used to solve ordinary and partial differential equations. The method is based on the integration of the terms in the equation to be solved, in lieu of point discretization schemes like the finite difference method. The FEA utilizes the method of weighted residuals and integration by parts (Green-Gauss Theorem) to reduce second order derivatives to first order terms. The FEA has been used to solve a wide range of problems, and permits physical domains to be modeled directly using unstructured meshes typically based upon triangles or quadrilaterals in 2-D and tetrahedrons or hexahedrals in 3-D. The solution domain is discretized into individual elements – these elements are operated upon individually and then solved globally using matrix solution techniques.

What are the types of FEA?

Depending on the complexity of a project, different types of FEA analysis methods can be used. While structural analysis is used for simulating a product’s performance under additional loads, vibration analysis will take into account issues relating to vibration. Fatigue analysis is used to examine the possibility of cracks in the physical structure.

What is FEA used for?

FEA can be used to evaluate corrosions on a machine component and can even predict future corrosion expansion. It can also help in figuring out the default frequency of a machine and its key parts, apart from calculating the possible effects of a nip load increase on a machine framework.

What type of problems require Non-linear analysis?

The following type of problems require non-linear analysis:

  • Structures and machine elements that have large displacements under load. Typical examples are: Deflection of film/paper, beams with large deformations, etc.
  • Mechanical contact problems with local deformations in the region of contact.
  • Materials with non-linear stress-strain curve.

How does FEA improve product quality?

For manufacturing high quality products, there is nothing better than FEA. In fact, using FEA can guarantee better quality, efficiency and uptime. This will further increase the profitability of your users, customers and manufacturers. FEA can also throw light on the defects in the product design. Based on the results, you can make appropriate changes.

What does the FEA process involve?

In the FEA process, a three-dimensional model is developed and then connected to a complex mesh by a number of nodes. An area within the mesh that seems to be prone to high stress will require an additional number of nodes. The mesh will then be bestowed with material and structural properties which will relate to stress, loan and vibration levels.

About CFD Simulation

What is Computational Fluid Dynamics (CFD)?

Computational Fluid Dynamics (CFD) is the analysis of fluid flows using numerical solution methods. Using CFD, you are able to analyze complex problems involving fluid-fluid, fluid-solid or fluid-gas interaction.

Have you tried SOLIDWORKS FloXpress?

It is a fluid dynamics add-in application included with SOLIDWORKS Standard, Professional and Premium, that calculates how fluid flows through part or assembly models. Based on the calculated velocity field, you can find problem areas in your design and improve them before you manufacture any parts.

We can run the simple analysis using Solidworks FloXpress.

How Embedded Flow Simulation Accelerates the Mechanical Design Process?

For several decades engineers and mathematicians have been trying to improve the understanding and prediction of fluid dynamics and heat transfer phenomena by means of CFD simulation. The objective is clear – to optimize the design of products and processes that involve fluid flow while minimizing the experimental effort, time and cost expended.

About DEM Simulation

What is Discrete Element Method (DEM)?

A discrete element method (DEM), also called a distinct element method, is any of a family of numerical methods for computing the motion and effect of a large number of small particles. Though DEM is very closely related to molecular dynamics, the method is generally distinguished by its inclusion of rotational degrees-of-freedom as well as stateful contact and often complicated geometries (including polyhedra). With advances in computing power and numerical algorithms for nearest neighbor sorting, it has become possible to numerically simulate millions of particles on a single processor. Today DEM is becoming widely accepted as an effective method of addressing engineering problems in granular and discontinuous materials, especially in granular flows, powder mechanics, and rock mechanics. Recently, the method was expanded into the Extended Discrete Element Method taking thermodynamics and coupling to CFD and FEM into account.

What software do you use?

We use EDEM software for particle simulation. We use EDEM software for particle simulation.

How many particles can be simulated with EDEM software

There is no limit of particles in EDEM; however, the number of particles will affect simulation speed. We have customers that regularly simulate several million particles and we recommend that an appropriately scaled material model is used to obtain simulation results.

Can EDEM be customized?

EDEM has a very powerful Application Programming Interface (API) which enables extensive customization of contact physics, particle-field interactions and particle initialization. The EDEM API uses the C++ programming language and is very versatile with many unique features designed specifically for development of advanced DEM simulations.

How many particle types can be defined and simulated?

EDEM can simulate any material type and shape, from large boulders to dry, fine, sticky or cohesive materials. There is no limit on the particle types you can include in your simulation. You can generate as many materials as you want and assign these materials to as many particle shapes as you want. You can build any shape using the validated and highly versatile multi-sphere method.

What is the smallest particle I can simulate in EDEM

There is no limit to the size of the particles in EDEM. However, if you are simulating particles of 2 microns, it is likely that you will have a very large number of particles in your simulation – and simulation time will be high. Depending on the application, there may be techniques that allow you to perform the simulation with good results and a practical simulation run-time.

How long does a simulation take to run?

Simulation speed will vary depending on a number of factors such as computer hardware, the bulk material properties and also the scale of the system being investigated.

EDEM has a powerful solver that enables fast and efficient simulations. It is highly parallelized for use in multi-core shared memory workstations. EDEM also has a GPU solver engine which can deliver simulation results up to 10 times faster than by using traditional desktop CPUs.

We provide tools to our users for estimating simulation run-time before they start a project, and there are also ways to improve simulation speed by varying input parameters.

Service Procedure

What services do we provide for design and simulation?

Mech solutions provides consulting services 3D design and simulation topics such as CAD, FEA, CFD & DEM projects. With our highly equipped team of experts we give entrepreneurial, innovative and solid knowledge on the various analysis for an array of industries.

What is the turnaround time for feedback and delivery?

We work best with deadlines that our customers give to us. Prior to us delivering any project we require our clients to review and ensure that they are absolutely satisfied with the requirements. Adjustments will then be made if the client is not satisfied with the work.

How much does it cost?

After our professional experts deliberate with the customer on the best procedure for the project(s) we will then create an invoice for the client’s review. Should services need to be removed or added we will do so in adjusting the invoice. Once the details have been sorted out we will draft a contract and payment plan to be agreed upon my Mech Solutions and the clients and or third parties involved.