Coder. Engineering Mechanics.
Joined December 2011
- Tweets 205
- Following 168
- Followers 165
- Likes 6,315
40 Photos and videos
Apr 12
Simulated Hibbeler's crank-slider using analytical, geometric & numerical approaches
Numerical one follows Featherstone-style kinematic tree - each link/joint has its own frame, solved locally & then recursively
simer.au/computational/rigid…
#Simulation #RigidBodyDynamics #Scala
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Feb 15
Ported a Hibbler mechanics problem into an interactive simulation. No numerical integration yet, but it's still useful to visualise how external forces reshape constraint/reaction forces & acceleration
Web demo: simer.au/computational/rigid…
#ComputationalMechanics #RigidBodyDynamics
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Feb 10
I'm writing shaders in #Scala and my transpiler converts Scala code to #GLSL. The best thing about this is that, the shader is fully unit-testable in #ScalaTest. It runs on #JVM, #GPU and browse (compiles with Scala.js).
Web demo: simer.au/computational/geome…
Next: compute shaders
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Feb 10
Functional operations like Array[T].map in Scala transpile to while loops in GLSL
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19 Dec 2025
A derivation of moment of inertia about an arbitrary axis, resulting in a simple matrix-vector form:
simer.au/engineering-mechani…
#EngineeringMechanics #RigidBodyDynamics
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13 Dec 2025
Robotic arm problems are always neat in Hibbeler's Dynamics:
simer.au/engineering-mechani…
#EngineeringMechanics #Dynamics #Kinematics
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Simer retweeted
6 Dec 2025
Math is the only place where truth and beauty mean the same thing.
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25 Oct 2025
Derivation of hydrostatic force magnitude and centre of pressure on a plane surface: simer.au/fluid-mechanics-2nd…
#FluidMechanics #EngineeringMechanics #ComputationalMechanics
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2 Sep 2025
I'm looking forward to getting fully shipped! The new parser always produces an AST, even with incomplete/error syntax, so LSP APIs stay active while coding. This release moves go-to-definition over, other APIs will follow #ralph_tooling #alephium #scala
github.com/alephium/ralph-ls…
✨⚒️ DevX just got better on $ALPH, Ralph-LSP takes a big step forward!
Ralph-LSP now uses Soft Parser, a new foundation that makes coding smoother and more reliable. Unlike strict parsers that break when code is incomplete, Soft Parser always provides the structure needed for IDE features to work while you type.
This means developers keep access to key tools like navigation and references, even if the code isn’t finished, bringing Alephium development on Ralph closer to the seamless experience found in mainstream programming languages. #DevX #RALPH
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2 Sep 2025
It enables:
- Bi-directional transformation (plaintext ⇆ AST): Needed for tests/debugging and for future implementation of Ralph code formatting.
- Patch updates for incremental parsing.
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15 Aug 2025
Shadows are working! Built with #LWJGL. Compiled with #ScalaJS so it runs on the web #WebGL. Shaders are written in Scala2 and transpiled to GLSL #OpenGL. Web demo: simer.au/computational/geome…
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21 May 2025
Did you catch the latest Ralph LSP update? it’s live in VS Code’s pre-release channel!
For Ralph VM devs, the Ralph LSP is the background server that brings autocomplete and code-navigation to Ralph smart-contract projects.
Ralph devs - test it and let us know your thoughts on GitHub! 👇
marketplace.visualstudio.com…
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Simer retweeted
19 May 2023
#Today, SpaceX tested a Raptor rocket engine, fired at a water-cooled "sandwich" of steel plates, designed to protect the launch pad during liftoff and mitigate the rock tornado experienced during Starship's launch on April 20
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The Desktop Wallet 2.0 is out 🚀
Check a fuller list of features in the medium article: medium.com/@alephium/desktop…
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17 Mar 2023
Completed solutions to problems in "Coplanar Force System". Moving onto "Three-Dimensional Force Systems"
simer.au/engineering-mechani…
#engineering #mechanics #statics #scala
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29 Jan 2023
I've started an online notebook at simer.au for jotting down my solutions to problems in R.C. Hibbeler's books on Engineering Mechanics. At the moment I'm going through Statics #mechanics #engineeringmechanics
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Simer retweeted
15 Jan 2023
Running un-optimized, single-threaded code on a modern PC is a bit like never putting your supercar in Sport or Race mode.
Sure it's "safer" but you're missing out, and missing the point.
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Simer retweeted
9 Nov 2022
We are excited to announce that we are going open source!
Come join our community, the Speedb Hive, in creating the next generation open source storage engine!
Github:
lnkd.in/dgc78wsM
Discord:
lnkd.in/dkTMCSRU
Can you hear the buzz ?
youtu.be/tFnBwIkmtt8
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