Manikanta Reddy

35 Questions 20 Answers 0 Followers

Questions related from Manikanta Reddy

Deformation of helical gear teeth mesh face because of high rotational velocities at no-load condition?

I would like to calculate the gear teeth deformation at no-load condition due to high rotational velocities. Here, I have carried out numerical analysis on double helical gear for 200 m/s pitch...

31 May 2025 5,673 0 View

Helical Gear tooth flank/face deformation due to high rotational speeds?

Respected sir, How the the distribution deformation of helical gear tooth along the face width occur due to high rotational speeds? Where the maximum and minimum deformation occur along the...

27 January 2025 8,183 0 View

How to perform static structural analysis in ansys to calculate Gear body & Gear tooth deformation due to rotational speed?

I would like to calculate the gear wheel and gear tooth deformation due to rotational speed? The gear shaft is mounted on hydrodynamic bearings. What are the boundary conditions need to apply?...

22 May 2024 8,129 0 View

What is the emissivity of 17CrNiMo6 at 50 deg C to 150 deg C?

I would like to set the emissivity of the infrared thermometer to measure the temperature. What is the emissivity of the material 17CrNiMo6 at 50 deg C to 150 deg C?

30 September 2023 5,917 0 View

How to calculate sliding friction coefficient using elasto-hydrodynamic lubrication?

I would like to simulate the heat generation in helical gears. I need to calculate friction coefficient, contact stress and sliding velocity. How to calculate friction coefficient?

02 June 2023 8,568 0 View

Simulation of heat loss in oil-jet lubricated helical gears?

Heat is generated in the helical gears due to sliding friction. Helical gears are oil-jet lubricated and cooled to reduce the gears temperature due to heat generation. I would like to estimate the...

31 May 2023 5,970 0 View

How to estimate gearbox power loss ?

How to calculate gearbox power loss? Example: A 30 MW gearbox, the helical gear pair mounted on journal bearing. It is rotating at high speeds (greater than 120 m/s). power losses are mesh power...

17 May 2023 4,678 2 View

How to measure gear teeth temperature?

Are there any methods available to measure gear teeth temperature? What are the instruments/sensors used to measure it? Any simple methods (contact and non-contact type) available to measure gear...

17 April 2023 3,504 0 View

How the minimum clearance is selected for any kind of hydrodynamic journal bearing?

How to select minimum clearance for hydrodynamic journal bearings, especially offset and elliptical bearings?

01 April 2023 3,505 0 View

How can I get Aircraft main rotor blade dimensions? Are there any free online sources?

I would like to simulate aircraft's main rotor blade under free vibration. where can I get the dimensions of rotor blade?

23 November 2021 5,275 1 View

Is ASTM E606 standard can be used for fatigue testing of Glass/epoxy composites?

I have prepared the Glass/epoxy composite specimens using the hand layup method. I would like to test these composites for fatigue. ASTM E606 available to me. Can I perform the fatigue testing of...

01 January 1970 2,237 4 View

What is the suitable volume fraction of Glass/epoxy aerospace composites? How do they estimate suitable volume fraction for different applications?

I would like to know the suitable volume fraction of glass epoxy composites in aerospace composites? What are the different volume fractions in different aerospace applications?

01 January 1970 7,429 3 View

How to write UMAT and VUMAT code in abaqus to estimate low cycle fatigue of composite?

I would like to estimate the fatigue life of the composite through numerical simulation. please help me with how to write code for low cycle fatigue in Abaqus.

01 January 1970 6,245 6 View

Why surface cracks and edge cracks are intentionally created in GFRP composites to predict the crack location and severity? In reality do they occur?

In glass fibre reinforced composites, surface cracks and edge cracks are intentionally created to predict the crack location and severity using artificial intelligence tools. In reality, first...

01 January 1970 1,115 2 View

How to find elastic constants of GFRP composites in tensile testing? How to determine 9 elastic constants?

I would like to find 9 elastic constants of GFRP composite. (Glass fibre reinforced epoxy). the reinforcement (Glass fibre ) is Glass woven roving (fibers are in 0 and 90-degree orientation). The...

01 January 1970 4,266 3 View

How to fabricate a glass/epoxy composite (including hardener) with fibre volume fraction of 0.6%?

I would like to fabricate a composite with 0.6% fibre volume fraction? How Can I fabricate? Could you please explain the process?

01 January 1970 3,273 5 View

How to detect both crack and delamination in a single composite?

If the composite has both transverse crack and delamination, how to identify locate them? Could you please clarify my doubt? Any journals on this question, please suggest

01 January 1970 1,518 1 View

How to calculate mode shape value ( mode displacement value) of a composite at particular node in ansys?

I would like to calculate mode displacement value at a particular node. How to calculate the values?

01 January 1970 5,716 2 View

What is the difference between Composite plate and Composite beam & applications? why researchers have done experiments on plate and beam separately?

Applications (Where do we use) of composite beams and composite plates? What is the difference between composite beam and plate.

01 January 1970 2,157 3 View

How edge cracks are formed in polymer matrix composites?

I have seen some research work on edge cracks on composite. Where and when can we observe the edge cracks in composites? Please elaborate on the answer.

01 January 1970 7,743 1 View

What is tension- tension fatigue test and tension-compression fatigue test? Where do we use these tests? on what type of components?

Fatigue tests: Tension-Compression and Tension-Tension application of fatigue tests

01 January 1970 5,014 1 View

Acoustic Emission working principle and generation of the wave forms

Dear sir/madam, I want to learn about Acoustic emission technique. I know the working principle, but i want to know the processing of the signals received by AE sensor. What happens after the...

01 January 1970 7,294 4 View

How to extract and mode shape values, mode shape curvature values from ansys apdl?

I would like to do vibration analysis to detect damage. How to extract mode shape values in ansys apdl?

01 January 1970 230 0 View

What is the use of Quasi-isotropic sequence in composites? Application of Quasi-isotropic sequences?

There are unidirectional, crossply and angle ply laminates.What is the use of quasi-isotropic laminates. there are different stacking sequences in quasi-isotropic: [0/+-45/90], [0/45/90/-45],...

01 January 1970 426 2 View

Composite laminate sequence used in aerospace and automotive applications

I would like to know the laminate sequences used in aerospace and automotive industries. I want to select a laminate sequence for my project. laminate sequence should be selected based on the...

01 January 1970 1,114 0 View

Why the gage area (length) of the specimen is in reduced size for the testing?

I have come across many papers showing the gage length of the specimen is in reduced size compared to the remaining area of the specimen. (dog bone shape) Why the size is reduced in the gage...

01 January 1970 8,917 0 View

Ansys mesh(sweep) of cracked composite model is not working? The error is following volumes could not be swept?

I have modeled the composite with 8 layers. I have modeled the crack up to half its thickness (volume is removed on top 4 layers to create a notch). While meshing, all layers are meshed except one...

01 January 1970 2,698 0 View

Behaviour of gear tooth under very high speeds (20000rpm)

what is going to happen to the gear tooth when the rotational speed of the gear is very high

01 January 1970 3,037 0 View

Acoustic Emission learning

My name is Manikanta Reddy, I am doing research. My research area is composites. I want to use Acoustic Emission equipment to identify cracks, delaminations, interface debonding, and fiber...

01 January 1970 7,842 7 View

Gear/pinion tooth temperature from no-load to full-load

I have measured gear tooth temperature using IR thermometer for a 20 MW gearbox running at 100 m/s. The no-load temperature is 70 deg C. How to calculate full-load temperature? There is no data...

01 January 1970 2,081 0 View

How Experimental modal analysis (vibration testing) is used to detect damage(location severity) in aerospace structures & components-fuselage, wings?

How the vibration testing is used to detect damage in aerospace components using modal parameters? What will be the accuracy, if only natural frequencies are used in damage detection? Are natural...

01 January 1970 9,382 3 View

How to model GFRP composite laminate in ansys workbench ? how to add different stack orientation? how to add resin between two laminae?

How to model GFRP composite laminate in ansys workbench ? how to add orientation for each lamina? how to add resin between two laminae?

01 January 1970 1,938 1 View

Can we use a single channel acoustic system(is it sufficient) to detect damages in composite materials?

I want to detect the damages in the composite materials and also size of the damage. Is single channel AE system sufficient for crack detection?

01 January 1970 3,349 2 View

Is it possible to obtain the fatigue data of composites online?

I am working on the fatigue life of composites. Are there any sources available online providing fatigue data of composites under different loading conditions? please answer it.

01 January 1970 7,970 8 View

How to make V notch in composites? Is there any standard to make V notch in Composites?

I would like to make V notch in composites. How to make V notch in composites and are there any standards to follow while making V notch?

01 January 1970 4,671 3 View