Tecosim Engineering Services Interview Questions and Answers

Spring back effect is the tendency of a material to return to its original shape after being deformed.

• Spring back effect occurs in materials like metals, plastics, and composites.

• It is caused by the release of internal stresses that were introduced during the forming process.

• Factors affecting spring back include material properties, forming process, and tooling design.

• Examples include metal sheets returning to the...read more

Types of fits include clearance fit, interference fit, and transition fit, each offering different advantages.

• Clearance fit: allows for easy assembly and disassembly, used in applications where relative motion is required (e.g. sliding fits)

• Interference fit: provides a tight connection with no relative movement, used in applications where rigidity is important (e.g. press fits)

• Transition fit: offers a compromise b...read more

Product design guidelines are principles and standards that help ensure the quality, functionality, and manufacturability of a product.

• Consider the target audience and their needs

• Ensure the design is user-friendly and intuitive

• Follow industry standards and regulations

• Optimize for manufacturability and cost-effectiveness

• Prioritize safety and durability

• Incorporate feedback from stakeholders and end-users

• Use sustaina...read more

GD&T is a system for defining and communicating engineering tolerances.

• GD&T stands for Geometric Dimensioning and Tolerancing

• It is used to define the allowable variations in form, size, and orientation of part features

• GD&T symbols are used on engineering drawings to specify the desired tolerances

• Proper implementation of GD&T can improve the quality and manufacturability of a design

Explicit methods calculate state variables directly, while implicit methods involve solving equations iteratively.

• Explicit methods are simpler and easier to implement, e.g., Forward Euler method.

• Implicit methods are more stable for stiff problems, e.g., Backward Euler method.

• Explicit methods require smaller time steps for stability, while implicit methods allow larger time steps.

• Implicit methods often require solv...read more

The stress-strain graph illustrates the mechanical behavior of ductile and brittle materials under load.

• Ductile materials exhibit a gradual increase in stress and strain, allowing for significant deformation before failure.

• Brittle materials show a steep slope in the elastic region and fail suddenly with little to no plastic deformation.

• The yield point in ductile materials indicates the transition from elastic to p...read more

Elements in CAE include 1D, 2D, and 3D types, each serving specific modeling purposes in simulations.

• 1D Elements: Used for beams and trusses (e.g., line elements in structural analysis).

• 2D Elements: Used for surfaces (e.g., triangular or quadrilateral elements in shell analysis).

• 3D Elements: Used for solid modeling (e.g., tetrahedral or hexahedral elements in volumetric analysis).

• Special Elements: Include axisymme...read more

The type of clamp and locator used in a checking fixture depends on the specific application and requirements.

• The clamp and locator should be chosen based on the part being checked and the desired level of accuracy.

• Common types of clamps include toggle clamps, pneumatic clamps, and hydraulic clamps.

• Locators can be pins, blocks, or other features that ensure proper positioning of the part.

• The checking fixture may a...read more