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Johnny Chen
Johnny Chen

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May 21

Arduino Challenge for Using Potentiometer to Tune the Piezo

Arduino Starter Kit Project 06 Youtube Video Challenge In the Arduino tutorial for starter kit (https://www.youtube.com/watch?v=DnD92Q_Kpac), the challenge presented for changing the phototransistor to control the Piezo to potentiometer. First, the terms for the project explained: Potentiometer: It is used to control the voltage or current in a circuit. The…

Arduino Projects

2 min read

Arduino Projects

2 min read


Jul 3, 2022

C++ Pointer Note

Pointer Introduction #include <iostream> using namespace std; int main(){ int n = 5; cout << &n << endl; // print the memory location of int n int* ptr = &n; // create a pointer ptr points to n variable…

Pointers

1 min read

Pointers

1 min read


Jun 9, 2022

Introduction to Ansys APDL Programming — Easy Hand-on Bar Example of Learning APDL

The first Finite Element (FE) commercial software I learn is Ansys Workbench, and it is quite intuitive to me to get hand on it for the beautiful user interface, very powerful CAD software-SpaceClaim. …

Ansys

3 min read

Introduction to Ansys APDL Programming — Easy Hand-on Bar Example of Learning APDL
Introduction to Ansys APDL Programming — Easy Hand-on Bar Example of Learning APDL
Ansys

3 min read


Dec 28, 2021

2021 年末旅遊 — 馬里蘭、巴爾的摩與費城

剛來美國第一年,對周遭環境與語言都還未適應,就馬上需要在2021 Fall和大學、研究所等的學生找實習。實習在美國大學中相當常見,每位學生聊天時會聊自己去年暑假在哪邊實習、做了什麼Project,老師上課時也會問學生實習經驗如何...等。 對於外國人的我們更是重要,實習不僅只是將自身專業可以實用在業界上,還可以在之後求職時對自身英文能力的證明。在課堂與找實習的雙重壓力下,我很幸運的能在2021年底收到實習offer,也算是放下心中一顆大石頭。 室友與我都雙雙找到正職與實習,因此這個Winter break特別適合出去走走。我們的行程較為自由且寬鬆(基本上沒有特別規劃),只選定了大致上的地點,其他的就照心情規劃。因為之前就答應親人要到馬里蘭一同過聖誕節,因此我們這次的行程就以紐約以南、馬里蘭以北為主。 最後去的景點: Maryland, Baltimore (inner harbor, federal hill), Philadelphia.

Trip

4 min read

2021 年末旅遊 — 馬里蘭、巴爾的摩與費城
2021 年末旅遊 — 馬里蘭、巴爾的摩與費城
Trip

4 min read


Dec 22, 2021

ANSYS: Easy Tutorial on Python Automation

This semester, I took Finite Element course and there are a lot of cumbersome work to set on ANSYS (inputting material, setting mesh, boundary conditions, etc.) Therefore, I was thinking about can I use some method to expedite the process and automation the repeating curser-click process. And I found out…

Ansys

3 min read

ANSYS: Easy Tutorial on Python Automation
ANSYS: Easy Tutorial on Python Automation
Ansys

3 min read


Aug 23, 2021

Ansys Finite Element Analysis: The Use of Remote Displacement and Remote Force

Why we choose to use Remote Displacement (Force) in lieu of Fixed Support and Force? It is obvious to use force at the end point and fixed support on the fixed end when using hand calculation of deflection on beam structure, but why should we use remote displacement and remote force? Let’s say we have a compression force exerted at the free-end of the beam (see below image), the beam would deform as the dash line shown.

Ansys

2 min read

Ansys Finite Element Analysis: The Use of Remote Displacement and Remote Force
Ansys Finite Element Analysis: The Use of Remote Displacement and Remote Force
Ansys

2 min read


Aug 8, 2021

Ansys Structural Optimization Spider Web

The beauty hidden inside the nature empowers people to create nature-inspired solutions Spider webs are sophisticated architectures that exhibits many mechanical function, such as catching prey, protecting offspring and support each others webs. Therefore, I am always fascinated by this nature-inspired structure and want to see their application. The paper…

Ansys

4 min read

Ansys Structural Optimization Spider Web
Ansys Structural Optimization Spider Web
Ansys

4 min read


Aug 6, 2021

Ansys Model Analysis Share Topology Issue

Beams share nodes issue fixed! Recently I saw a Paper “Structural Optimization of 3D-Printed Synthetic Spider Webs for High Strength”, this paper makes me want to dive deeper into the field of spider web and explore the wonder of this nature creation. The very first step is to plot the…

Ansys

3 min read

Ansys Model Analysis Share Topology Issue
Ansys Model Analysis Share Topology Issue
Ansys

3 min read


Jul 31, 2021

Thermal FEA Analysis on Fins Structure

The more surface area, the more heat it would dissipate. I have been joining the project on Cislunar Explorers group, a 2 3U CubeSats, responsible for the thermal Finite Element Analysis on the CubeSats. And I happened to watch the video (https://www.youtube.com/watch?v=E40PO_n8BpU&t=185s), I was inspired to do a simple Ansys…

Heat Transfer

4 min read

Thermal FEA Analysis on Fins Structure
Thermal FEA Analysis on Fins Structure
Heat Transfer

4 min read


Jul 23, 2021

Week 2: Thermodynamics Introduction

1st Law of Thermodynamics, Conservation of Energy 1st Law of Thermodynamics in closed system It is also called Conservation of Energy. Conservation of Mass (COM): The mass will never be destroyed. Conservation of Energy (COE): The energy will never be destroyed. Formula : From this formula, we can see that…

Thermodynamics

3 min read

Week 2: Thermodynamics Introduction
Week 2: Thermodynamics Introduction
Thermodynamics

3 min read

Johnny Chen

Johnny Chen

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